How Carbon Border Adjustments Might Drive Global Climate Policy Momentum

This report examines how the European Union carbon border adjustment mechanism creates an important incentive for other countries to adopt carbon pricing, and how this policy spillover effect could increase as more countries adopt similar policies.

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Date

Oct. 10, 2024

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20 minutes

Abstract

The introduction of the European Union carbon border adjustment mechanism (CBAM) creates an important incentive for other countries to adopt carbon pricing. The authors examine this policy spillover effect, finding that countries throughout the world have increased their use of carbon pricing regimes as well as their interest in both carbon pricing and decarbonization, especially in the period since the EU focused on this policy tool. If more countries, including the United States, consider border adjustment regimes, this can strengthen such policy spillover effects. However, care should be taken to address the needs of lower-income economies and to avoid disguised protectionism.

1. Introduction

The world has a powerful new climate policy tool – the carbon border adjustment mechanism (CBAM)—but its most impactful aspect is also its most overlooked. Climate change is the world’s largest global collective action problem. But without coordination, countries may free ride on each other’s efforts since the costs of policy action are borne at home, while the benefits are shared worldwide. Before CBAM, global climate efforts focused on voluntary commitments, which invite free riding. The CBAM encourages coordination, in part by offering an important mechanism for overcoming the free-rider problem.

The CBAM is a new policy device, first introduced into law in the European Union in October 2023. Beginning in 2026, the CBAM will impose a levy on select imported non-EU industrial goods that adjusts for the differences between the EU Emission Trading System (EU ETS) carbon price and the carbon price paid in the producing countries. The United Kingdom has followed suit with a CBAM that is scheduled to be implemented in 2027. Governments around the world are trying to understand how a CBAM will impact their exports and what policy responses they should take before 2026 to mitigate potential negative effects.

While much of the discussion of CBAM focuses on its ability to prevent production and the associated emissions from migrating to countries that do not price carbon (a phenomenon called “leakage”) , the potential policy spillovers are an underappreciated component of the discussion. Most directly, because the EU and UK CBAMs credit imports for carbon prices already paid, they provide incentives for other governments to impose carbon prices. They can also encourage governments to take other steps to help their industry reduce emissions, including subsidies or direct investment in decarbonization. These considerations are spurring discussions about linkages across the multiple components of countries’ climate policies, including measurement, innovation, and industrial policies.

This policy brief outlines the possible policy spillovers from CBAMs and offers evidence of their impacts to date. Our findings suggest that the EU CBAM has had important spillover impacts, encouraging governments around the world to consider carbon pricing and instigating conversations about broader coordinated climate policy action. We will discuss examples of policy spillovers, including countries that have expanded existing emissions trading schemes (ETSs), others that have introduced new carbon taxes or ETSs, and several that have considered their own CBAM-like policies.

2. How the EU and UK CBAMs will work in practice

The EU’s CBAM is in its implementation phase, following the law’s adoption in 2023. The design of the EU CBAM can be best understood with reference to the domestic climate policy that it complements—the EU emissions trading system (ETS). The EU ETS is a cap-and-trade system in place since 2005, which covers the electric power and industrial–sector greenhouse gas (GHG) emissions in the European Union. Many energy-intensive industries produce internationally traded commodities. The combination of energy (and for now, GHG intensity) with trade intensity creates a risk of carbon leakage: if foreign competitors do not face similar carbon costs to producers in Europe, imports may displace domestic production and/or production may move offshore. Concerns about industrial competitiveness have historically been addressed by giving producers free ETS allowances, but this approach has limitations. With a rapidly declining cap, only a limited number of allowances are available. Further, free allocation dampens the carbon price signal and reduces auction revenues. Such considerations prompted EU legislators to move to the CBAM as an alternative. The CBAM design can thus be seen as an extension of the EU ETS to imported industrial goods in ETS sectors.

At its inception, the CBAM will apply only to some of the largest industrial EU ETS emitters, such as steel and cement production. Due to the complexities of, and lack of experience with, implementing a CBAM, many industrial sectors are not yet included in the CBAM scope. However, the included sectors account for a majority of EU industrial emissions.

Practically, importers of CBAM-covered goods are asked to submit data on the carbon embedded in the goods (based on actual data, although default values can be used as a fallback). For every ton of embedded emissions, a CBAM certificate needs to be purchased and surrendered (once a year). The CBAM certificates act as the equivalent to an EU ETS allowance. They are sold on a continuous basis, tracking the recent EU ETS price. As with ETS allowances, importers can strategically buy certificates based on market circumstances.

The charges under the CBAM can be adjusted for two reasons (European Commission 2023). First, free allowances are phased out only gradually, between 2026 (when the implementation phase ends and charges begin) and 2033. To the extent that free allocation continues, the CBAM charges will be reduced commensurately so that EU producers do not receive a preference relative to imports. CBAM charges will also be reduced when “a carbon price has already been paid in the country of origin.”

The crediting provision has the potential to create powerful policy spillover effects, as jurisdictions have an incentive to apply carbon pricing to mitigate CBAM charges. Questions remain about how this provision will be applied in practice since the European Commission still needs to develop guidance. While the principle of this so-called Article 9 provision is straightforward—to avoid charging the same GHG emissions twice—several important implementation details are not yet finalized. There are many ways to design carbon pricing policies. For example, the European Union will not credit free allocation methods, such as full output-based allocation. But what if the carbon price only applies to exports—or even only to EU-bound exports? Also, should energy taxes be credited based on the carbon content of taxed fuels?

By the time the CBAM charges start binding in 2026, the answers to these questions should be clear. However, in crafting an answer, the European Commission will have to balance strict interpretations that might protect its own producers more (by not crediting) versus being perceived as forcing its own policy design onto other countries.

The United Kingdom is on track to be the second country implementing a CBAM, for reasons similar to the European Union. The United Kingdom has an ETS that, despite some post-Brexit divergence, still very much resembles the EU ETS. However, in some cases, the United Kingdom might choose slightly different policy design options. The UK CBAM intends to cover the aluminum, cement, ceramics, fertilizer, glass, hydrogen, iron, and steel sectors. This differs slightly from the EU CBAM, as it adds glass and ceramics and excludes electricity. The United Kingdom similarly intends to limit the introduction of CBAM charges to sectors most at risk of leakage but acknowledges sectoral coverage will continue to be reviewed as new information comes to light. Charges will include direct, indirect, and certain precursor emissions and will be based on the effective carbon price, which is defined as “the price paid by producers after accounting for the impact of free allowances and other support mechanisms” (UK Government 2024). In keeping with a nondiscriminatory approach, charges will be significantly lower than the UK ETS price, to reflect free allowances provided within the United Kingdom.

3. How CBAMs Create Policy Spillovers

The EU CBAM will start with small fees in 2026, increasing more steeply starting in 2030 as free allowances are phased out. As CBAM levies increase, CBAMs will create incentives for governments to consider adopting carbon pricing, and those incentives are particularly strong for some countries. For instance, when countries export substantial energy-intensive products to Europe, carbon pricing can convert European tariff revenue into domestic revenue. Since the European Union and the United Kingdom both “credit” existing carbon pricing regimes, countries that levy equivalent carbon prices can “turn off” the border adjustment. If carbon pricing regimes abroad have lower prices than those in Europe, then the CBAM levy will still be reduced by the amount of the carbon price. Likewise, exports from countries with emissions trading systems can receive credit for the carbon price associated with purchasing emissions allowances, if such allowances are not given away.

Important questions remain about how crediting will work, but at present, only true carbon pricing regimes will be credited. One proposed alternative would allow credits for purchases of carbon offsets, as a way to encourage flows of climate finance (Sandler and Schrag 2022). Others have suggested allowing credits for cost-imposing regulations or for subnational efforts. Many of these suggestions raise vexing implementation issues, even beyond those raised by the EU CBAM.

In most cases, the incidence of a tariff falls on consumers in the market that levies the tariff, and the same would be expected in markets that implement CBAMs, such that European consumers (directly or indirectly) pay higher costs for steel, iron, aluminum, fertilizers, cement, and electricity. Since these goods would be more expensive in Europe, that would generate higher costs for goods produced in Europe that use these goods as inputs.

Although consumers bear the ultimate burden of most tariffs, these tariffs typically entail large transfers from consumers to both domestic producers and the state (in the form of tariff revenue). In the case of European producers, the higher domestic price that consumers pay merely compensates them for (some part of) the cost of purchasing emissions allowances.

An exporting country facing a CBAM can convert the transfer from European consumers to the state (in the form of tariff revenue) into local revenue instead of European revenue by adopting carbon pricing. For example, consider the case where Mozambique—which exported over 95 percent of its aluminum to the EU in 2019—levies an aluminum-sector carbon price equivalent to the EU CBAM charge (World Bank 2023). Because Mozambique firms will likely face the carbon price in either case, they will be indifferent about the collection of the carbon price, but where the revenue ends up (in the hands of the European or Mozambican tax authorities) will depend on whether Mozambique has a carbon price in place. This gives the Mozambique government a powerful incentive to levy a carbon price on the aluminum sector. If Mozambican firms are cleaner than the marginal European supplier, they may benefit from the CBAM; if they are dirtier, they may be harmed by it. In general, the cleanest suppliers will see price increases that exceed their carbon fees, while the dirtiest suppliers will pay more in fees than the price premium, or divert their product to other markets, facing higher transportation and logistics costs.

Countries may have other reasons to adopt carbon pricing in response to CBAMs, especially if CBAMs proliferate. For instance, for governments that find carbon pricing difficult to implement due to domestic political constraints, the external pressure of a CBAM can provide both impetus and a scapegoat, akin to pushing an open door, as policymakers can point out that exporting firms would have to pay these fees when they export regardless of domestic policy action.

However, the strength of all these incentives may be modest for many countries. Countries that export large quantities of energy-intensive products to the European Union, such as Türkiye and Ukraine, have far stronger incentives than countries that export far fewer quantities to CBAM jurisdictions. At present, the small scope of CBAMs and number of jurisdictions that impose them limits such incentives, but if CBAMs deepen and widen, such incentives would increase.

Even countries that already have carbon pricing policies in place might consider changing the parameters of their programs in response to the CBAM. An example is China, which is considering adding the steel, cement, and aluminum sectors to its ETS ahead of the 2026 start for CBAM charges (Reuters 2024).

CBAMs also may induce responses on other margins, even without a country adopting carbon pricing. For instance, CBAMs may provide incentives to locate energy-intensive production near clean energy sources or innovate cleaner production methods. Such responses also may be important in driving emissions reductions. However, countries may reshuffle energy use or underlying trade. For example, if a country uses more hydropower for fertilizer production while using dirtier energy sources for other needs, its response to the CBAM will merely relabel existing energy use. Likewise, if cleaner sources of production go to CBAM markets, whereas dirtier sources are diverted elsewhere, the extent of industrial carbonization will be more limited than if CBAM markets became more widespread.

Even when governments adopt carbon pricing, their adoption may be far from an economy-wide carbon price. Instead, they may focus on CBAM sectors, or even solely on exports from CBAM sectors. While export taxes are not permissible under the US Constitution, no World Trade Organization (WTO) rules prohibit them. Levying an export tax solely on exports destined for CBAM markets, however, may be impractical. Exporters would simply divert trade to non-CBAM markets when feasible, and trade would reshuffle as a result. Whether the European Union would credit such a regime also remains unclear.

Further, both broader export taxes and carbon pricing would continue to raise competitiveness concerns in markets without carbon pricing, absent a system of export rebates. Thus, industrial opposition to such policies would be expected, although policymakers might consider other ways to reduce negative effects on industry, including lowering other taxes, more infrastructure support, or other policy tools.

One implementation question is whether to credit for carbon prices enacted by sub-national governments, such as US states, Canadian provinces, or Chinese cities. This approach could incentivize climate policies at a sub-national level, which may be more politically viable and which may be a precursor to national action in the long run. Still, the approach could invite gaming. Similar to the reshuffling issues identified above, highly localized jurisdictions that include factories that export to the European Union may enact carbon pricing. Also, crediting sub-national carbon prices increases the administrative burdens by adding more policies to review and evaluate. The conditions are still uncertain under which the European Union will credit for carbon prices already paid. It will presumably want to strike a balance between offering sufficient protection against loopholes and avoiding overly burdensome restrictions that other countries may perceive as infringing on their own policy space.

Carbon pricing systems based on carbon intensity targets pose another challenge. Notably, the Chinese ETS is based on reducing the carbon intensity of covered sectors over time, without necessarily capping the absolute quantity of emissions. The price discovery that takes place under such a policy design is different from what could be expected under a normal cap. This might affect judgments on equivalency.

At a high level, the hope is that the EU and UK CBAMs lead to a virtuous cycle, where more and more countries adopt carbon pricing as part of their fight against climate change. If, for example, Thailand, Brazil, India, and other countries now discussing domestic carbon pricing also implement border adjustments, additional countries will see the direct advantage of carbon pricing to avoid tariffs on exports and the political benefit of joining the momentum. As the carbon pricing wave gathers more countries, it becomes stronger, and ultimately can draw in even the most reluctant governments.

Coordinated action on carbon pricing and CBAMs will in turn make the policies more streamlined, lowering compliance and administration costs. For example, countries can work together to develop similar approaches to measuring carbon emissions as well as protocols for monitoring and verifying reported emissions. Coordination will help individual countries build capacity domestically by leveraging lessons from elsewhere and build confidence in the global system. For example, more than a dozen countries have already begun a process to coordinate on measuring, monitoring, and verifying methane emissions from the oil and gas sector.

Importantly, global coordination to overcome policy reluctance has worked in other domains. The 2021 international tax agreement shows a recent precedent for global coordination on the long-vexing global collective action problem of tax competition (Clausing 2023). The incentives behind the international tax agreement are similar to CBAM: if countries do not adopt the agreed corporate minimum tax, their multinational companies operating in adopting jurisdictions are still on the hook to pay the tax. This creates incentives for countries to join the agreement to avoid losing fiscal revenues to other countries.

CBAM Spillovers in Practice

Evidence is growing that the EU CBAM is already leading to global spillovers. When the EU CBAM was first discussed in July 2019, 57 carbon-pricing initiatives were either implemented or scheduled for implementation globally (World Bank 2019). As of May 2024, the number of implemented programs has risen to 75, covering roughly 24 percent of global emissions (World Bank 2024). In addition to the increase in implemented programs, a rising number of countries are considering carbon pricing and border measures for the first time. Figure 1 highlights the progress in national carbon pricing and border measure initiatives, showing 44 instances of policy advances, representing 37 countries, that have either been implemented or entered various stages of development, consideration, or discussion since January 2019. While countries may have started developing carbon pricing policies for many reasons since 2019, the introduction of the CBAM creates a clear incentive with its potential impacts on industrial market shares and fiscal revenues.

To further understand how the EU CBAM is leading to global spillovers, we conducted an analysis of media hits for carbon pricing, border measure, and decarbonization terms in different regions of the world. The appendix provides a full list of search terms and describes our methodology.

Figure 1. Cumulative Carbon Pricing or Border Measure Developments, January 2019–July 2024

Figure 1 (web)

Notes: Statuses for programs “Under Consideration,” (7) “Under Development,” (8) and “Implemented” (9) were taken from World Bank’s State and Trends of Carbon Pricing Dashboard (World Bank N.d.). The category “In Discussion” was also included for programs that have been discussing carbon pricing since the announcement of the EU CBAM, but do not yet have an official government source confirming the intention to work towards implementation. See the appendix for a breakdown of all programs.

Figure 2 shows media hits for carbon pricing and border measure terms in regions without a carbon price as of July 2019 (excluding the United States). This figure shows an approximately fourfold increase in media hits since before the EU CBAM was announced, with increased discussion at each major CBAM milestone and a sustained level change after the European Commission officially presented the CBAM proposal. Total media hits in these regions are plotted on the right axis (green line) to show that this increase is not due to an overall increase in media hits.

Figure 2. Carbon Pricing and Border Adjustment Media Hits, January 2016–July 2024, Excluding the United States and Regions with a Carbon Price as of July 2019

Figure 2

Notes: See the appendix for details on data construction. The five countries with the most media hits are India, Vietnam, Indonesia, China, and United Arab Emirates.

In contrast, the United States, the world’s second-largest emitter, has distinct trends regarding media interest in carbon pricing (and less exposure to the EU CBAM). Historically, the United States has struggled to generate political support for carbon pricing; Figure 3 shows a relatively steady level of media interest over the same time period. While the United States still sees peaks in media hits around CBAM milestones, this increase in discussions has not been sustained, leaving the United States largely out of step with other unpriced regions. Of course, CBAM payments reflect the carbon price multiplied by the exporter’s emissions, so to the extent US companies reduce emissions—for example, by taking advantage of the clean energy subsidies in the Inflation Reduction Act—any US CBAM payments will fall even without a US carbon price.

Figure 3. Carbon Pricing and Border Adjustment Media Hits in the United States, January 2016–July 2024

Figure 3

Notes: See the appendix for details on data construction.

However, the United States has begun its own discussions on border measures, introducing the Foreign Pollution Fee Act (FPFA) and the Clean Competition Act (CCA). These two bills propose distinctly different strategies for pricing emissions at the border. Notably, the FPFA does not impose prices on domestic firms, a decision that carries potential downsides explored further below.

While the growing global interest in carbon pricing is a positive development toward globally cost-effective climate policy, a broader goal of the CBAM is to support global emissions reductions. To understand whether there has been increased interest in decarbonization, we analyzed media hits for terms related to clean energy, green steel, and decarbonization in regions without a carbon price as of July 2019, as shown in Figure 4. The total average monthly media hits for these terms have surged from around 4,000 in 2016 to approximately 30,000 in 2024. This upward trend gained momentum following the EU Commission’s first announcement, suggesting that the CBAM may have heightened interest not only in carbon pricing but also in decarbonization. For example, Indian manufacturers are investing heavily in clean alternatives, including using small modular nuclear reactors in heavy industry (see Saptakee S 2024 and Press Trust of India 2024).

Figure 4. Decarbonization-Related Media Hits, January 2016–July 2024, Excluding the United States and Regions with a Carbon Price as of July 2019

Figure 4

Notes: See the appendix for details on data construction. The five countries with the most media hits are India, United Arab Emirates, Vietnam, China, and Nigeria.

While the analysis of possible spillovers is promising in this regard, some developments could unravel global cooperation in this area. Rising global fragmentation, nationalism, and violent conflict has made international economic cooperation more difficult. Several prominent jurisdictions have ignored WTO rules and WTO rules are also insufficiently adaptable to new circumstances in some instances.

Some governments have contended that the EU CBAM is insufficiently multilateral in spirit, effectively imposing EU regulations (and substantial costs) on outside countries. Still, the European Union took care to design the CBAM in a manner that is compatible with WTO principles. The CBAM is nondiscriminatory, treating both EU producers and foreign producers on a level playing field should they wish to serve the EU market. Nonetheless, some governments have indicated that they intend to challenge the CBAM at the WTO.

Beyond WTO challenges to the CBAM, particular approaches to a US border measure could jeopardize the momentum created by the EU approach. For example, if the US were to implement carbon tariffs on foreign imports without any parallel domestic charge on US producers, this could interfere with the collaborative dynamic we describe above for the following reasons. US firms would have large advantages (both at home and abroad) in comparison with foreign firms who face a carbon price. Emissions-intensive foreign firms exporting to the United States could expect to pay a “foreign polluter fee” even though they have already paid at home (unless carbon prices paid would be credited like the EU CBAM does), whereas US firms would pay nothing. This compounds the advantage that US firms already enjoy in third markets due to Inflation Reduction Act subsidies and the absence of a US carbon price. Further, the inequities of imposing a pollution fee on imports from less developed countries but not on domestic firms could be costly geopolitically—and even have negative knock-on effects, including pushing foreign countries closer to China. Some proposals for a US border measure – including a tariff-only approach –consider the geopolitical dimension and potential impact on less-developed countries by opening the door to exemptions. Such an approach, however, might have inherent limitations when thinking about emerging economies with fast-growing industrial output and/or low-carbon production.

Importantly from a climate perspective, taking a tariff-only approach in the United States has the potential to weaken the resolve of policymakers in such jurisdictions as Europe or Canada to impose costs on their own firms. Canadian firms, for example, could argue that they are at a comparative disadvantage relative to US firms and that they too would prefer a “tariff-only” approach. These mechanisms could unravel the important momentum that has been built around carbon pricing in recent years, shown in Figures 1 and 2 above.

In contrast, the United States could increase the momentum described above with a more aligned approach that gradually introduces carbon pricing alongside CBAMs. Countries considering a border measure should also think through how the policy might play out over a longer time horizon. Climate policy and relative carbon intensities are evolving rapidly. Carbon intensities might improve rapidly for both (climate) policy and non-policy reasons (i.e., due to regular capital stock replacements). Countries that are motivated to protect domestic industries through border measures might find it easier to do so the more carbon-efficient their own producers are, which over longer time horizons demands further domestic action.

5. Policy Recommendations

Carbon border adjustment mechanisms can generate important positive policy spillovers with the potential to drive global emission reductions, while also alleviating longstanding free-rider problems that inhibit policy action on climate change mitigation. However, policy makers should attend to policy design and implementation issues that can affect the success of these efforts.

5.1. Implementing Countries

Countries implementing CBAMs will need to wrestle with vexing measurement and crediting issues (see Elkerbout and Nehrkorn 2024). For example, assessing the carbon intensity of imports on a jurisdictional basis has the advantage of avoiding reshuffling (whereby the cleanest subset of production goes to CBAM jurisdictions) and incentivizing broad government policy action on decarbonization. However, firm decarbonization efforts may be insufficiently incentivized unless there is a mechanism for firms to “prove-out,” demonstrating that they are cleaner than their jurisdiction’s average emissions (with the remaining average adjusted accordingly), as suggested by Cicala et al. (2023). Implementing jurisdictions also should be sensitive to the administrative burden of CBAMs, allowing time for adjustment as well as technical assistance. For all countries – but developing countries especially – the prospects of having to comply with several CBAMs, each with their own GHG intensity quantification rules (i.e., no interoperability), is daunting.

Implementing jurisdictions will need to decide what carbon pricing measures abroad to credit as equivalent to the domestic system. For example, the European Union credits exporting countries for carbon prices paid at home. But the breadth of these crediting exemptions remains to be established. For instance, will Europe credit countries that levy such a fee only on exports or those that levy a fee only on exports to Europe? Likewise, what if the carbon pricing system abroad involves a threshold, where the price is only imposed above some benchmark emissions intensity, rather than on all emissions? How should such partial systems or sub-national systems be credited?

5.2. Receiving Countries

Countries facing CBAMs on their exports may choose to implement carbon pricing at home in order to convert foreign tariff revenue into domestic revenue, achieve domestic mitigation objectives, and join global collective efforts. Absent carbon pricing, countries exporting energy-intensive goods to CBAM jurisdictions will either face tariffs on their exports, or they will divert their trade to other markets without CBAMs. As more and more countries adopt CBAMs, and as the coverage of CBAMs expands, carbon pricing becomes a more attractive policy response.

Countries choosing to implement carbon pricing also may want to implement CBAMs of their own, in order to address domestic competitiveness concerns, reduce leakage, and enlarge the club of countries incentivizing global policy action.

5.3. Multilateralism

If feasible, greater multilateral coordination in this area would be helpful to both reduce compliance costs from overlapping regimes and to facilitate policy convergence. While the European Union has taken care to design their CBAM in a nondiscriminatory manner that is consistent with WTO norms, that constraint also limits the extent to which the policy can address the “common but differentiated responsibilities” goal at the center of the Paris Accord. Without differential treatment, CBAMs may create adverse distributional consequences, moving mitigation effort toward receiving countries (see, e.g., Böhringer et al. 2012).

One productive step forward would be to vary the carbon price required to “turn off” a CBAM, based on a country’s level of development. For example, Parry et al. (2021) suggest tiered carbon price floors; one scenario they model includes price floors of $75 per ton for advanced economies, $50 per ton for higher-income emerging economies, and $25 per ton for low-income emerging economies.

Such a discriminatory policy design would be easiest to adopt in the context of a global agreement with broad participation. Participation in coordinated carbon pricing could also be encouraged through enhanced climate finance commitments that would provide additional resources for mitigation in lower-income countries, where low-cost mitigation options may be relatively plentiful. With leadership among G20 countries, multilateral coordination has the potential to enable important progress.

5.4. United States Climate Policy

For the United States to achieve its global mitigation goals, it is important to focus on the North Star goal of global emissions reduction and recognize the large potential of greater policy coordination in achieving that goal. The European Union CBAM has already created worldwide momentum toward carbon pricing, and US policy choices will impact that momentum.

To advance climate mitigation goals, the United States would ideally take a leadership role in this space, working to influence greater mitigation efforts abroad and to help organize and promote G20 leadership. If the United States adopted even a modest carbon price, that could enable the simultaneous achievement of three important goals: large US emissions reductions that would narrow or eliminate the gap between US policy and Paris Agreement commitments, large US government revenues to help finance the transition or meet other fiscal needs, and the potential for more collaboration with partners abroad that are addressing climate change.

If the United States joins the European Union, Canada, the United Kingdom, and many others that are implementing carbon pricing alongside CBAMs, the incentives for other countries to follow suit will be magnified, and the United States will also have an important role in key design and implementation issues.

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