Joe Biden’s foreign policy did not simply “return to normal”; it fused an assertive climate and alliance agenda with protectionist economic tools, reshaping how the United States engages the world on both cooperation and competition.

Key Points

• Biden used early executive action—most visibly rejoining the Paris Agreement—to signal a turn back toward multilateralism and alliance repair.
• Climate policy became a core pillar of foreign policy, with ambitious U.S. emissions targets, new climate diplomacy, and efforts to reclaim leadership in green industries.
• At the same time, Biden entrenched “foreign policy for the middle class,” keeping tariffs and strengthening Buy American rules, leading critics to label his approach “polite protectionism.”
• These choices played out against chronic U.S. climate policy whiplash and were later partially reversed by a second Trump administration, underscoring how fragile Biden’s changes were.

From “America First” to Renewed Multilateralism

Biden entered office after four years of what many allies experienced as erratic and often antagonistic U.S. foreign policy under Donald Trump. His first-order objective was to restore predictability and rebuild trust with traditional partners. On day one, he signed an executive order returning the United States to the Paris Climate Agreement, reversing Trump’s withdrawal and re-aligning the U.S. with the core multilateral climate framework. Within a month, his administration moved to re-engage other institutions Trump had shunned, including the United Nations Human Rights Council, and reaffirmed the centrality of NATO and the wider transatlantic alliance in U.S. strategy. This cluster of early moves was not symbolic window dressing; it was intended to signal that the U.S. was once again prepared to shoulder the burdens of institutional leadership that underpin the post‑1945 order.

European and multilateral observers read these choices as a deliberate pivot. An analysis prepared for the European Parliament in mid‑2021 framed Biden’s foreign policy around two priorities: “building back better” globally and working with allies to counter authoritarian rivals such as China and Russia. Rejoining Paris, recommitting to NATO, and funding mechanisms such as COVAX to combat COVID‑19 abroad were presented as part of a single project of renewal. In this sense, Biden’s foreign policy drew directly from mid‑20th‑century liberal internationalism—confidence in alliances, institutions, and cooperative problem‑solving—even as it operated in a more fragmented, multipolar world.

Climate Policy as a Foreign Policy Instrument

Where Biden diverged most sharply from his predecessor was in treating climate change as a central foreign policy issue rather than a peripheral environmental concern. The administration recommitted the United States to ambitious climate targets—100 percent clean electricity by 2035 and net‑zero emissions by 2050—and tied those targets to economic and diplomatic strategy. John Kerry’s appointment as Special Presidential Envoy for Climate, with cabinet‑level status and a direct line to the president, reflected the elevation of climate diplomacy to a core portfolio alongside traditional security concerns.

Domestically, Biden’s climate agenda was backed by substantial regulatory and legislative action. Executive Order 14008 and related measures paused oil and gas leases on public lands, revoked the presidential permit for the Keystone XL pipeline, and created a National Climate Task Force to coordinate whole‑of‑government action. The administration then pushed through the Inflation Reduction Act, described by global health and climate analysts as the most ambitious U.S. climate legislation enacted to date, with hundreds of billions of dollars in tax credits and loans aimed at accelerating clean energy deployment and positioning U.S. firms as leaders in green technologies.

Externally, these moves were framed as restoring American leadership in global climate governance. The UN Secretary‑General welcomed the U.S. announcement to reenter the Paris Agreement, underscoring the importance of Washington’s return for the credibility of the regime. Biden’s team pursued bilateral climate diplomacy with China and began to articulate a broader strategy for helping other countries with adaptation and resilience, such as the PREPARE initiative. In climate, as in health, the administration sought to demonstrate that U.S. power could be used to supply global public goods rather than merely secure narrow advantage.

Alliance Repair and Democracy‑Centered Strategy

Alliance repair extended well beyond climate. Biden repeatedly described his goal as restoring the United States to a “position of trusted leadership” among global democracies. That aspiration manifested in several directions: recommitment to NATO and support for its expansion to include Finland and Sweden; new or reinvigorated coalitions such as the Quad and AUKUS; and an agenda of summits and groupings focused on technology, supply chains, and infrastructure among like‑minded states.

Analysts sometimes refer to this as the “Biden Doctrine” of democracy‑centric foreign policy. One study argues that Biden’s primary strategy was to confront authoritarian regimes directly—especially Russia and China—while simultaneously weaving tighter networks among democracies to manage global challenges. The administration leaned heavily on alliances in responding to Russia’s invasion of Ukraine, coordinating sanctions and providing extensive military, economic, and humanitarian aid. It also sought, more unevenly, to balance security partnerships and human rights concerns in the Middle East, for example by backing Israel militarily while engaging in ceasefire diplomacy and humanitarian relief in Gaza. In all of these arenas, Biden’s foreign policy emphasized that America’s legitimacy rested on defending democratic norms, even when the practice fell short of the rhetoric.

“Foreign Policy for the Middle Class” and Polite Protectionism

Yet Biden’s foreign policy was not a straightforward restoration of pre‑Trump globalism. From the outset, his team insisted that foreign policy must “work for the middle class,” a phrase that pointed to domestic distributional concerns as a yardstick for international engagement. In economic statecraft, this translated into maintaining many of Trump’s trade tools—tariffs on China, for instance—while layering them with industrial policy designed to re‑shore critical manufacturing. The CHIPS and Science Act and the climate provisions in the Inflation Reduction Act together directed more than $400 billion toward semiconductor and clean energy industries, explicitly linking national security, competitiveness, and jobs.

Trade scholars at institutions such as the Cato Institute and Mercatus Center have characterized Biden’s approach as “polite protectionism”: less rhetorically confrontational than Trump’s, but substantively similar in its reliance on unilateral measures and domestic content rules. Strengthened Buy American provisions in federal procurement, along with targeted export controls and investment screening in sensitive technologies, signaled a willingness to prioritize U.S. manufacturing and security concerns even when allies saw those moves as protectionist. A Mercatus analysis argues that Biden’s embrace of what his team dubbed a “New Washington Consensus”—centered on strategic industries and state intervention—represented a departure from the traditional rules‑based trading system.

This tension—multilateral climate and security engagement on one hand, assertive economic nationalism on the other—is central to understanding what Biden actually changed. In climate, the United States returned as a cooperative leader; in trade, it remained a rule‑bending hegemon willing to weaponize interdependence to protect domestic constituencies. For many European and Asian partners, this duality was acceptable so long as it delivered stability after Trump. For more market‑liberal critics at home, it looked like a continuation of Trump’s foreign economic policy wrapped in more diplomatic language.

Policy Whiplash and the Limits of Biden’s Changes

Biden’s climate‑centered foreign policy unfolded within a broader pattern of American climate governance marked by volatility. Since the 1990s, the United States has repeatedly shifted course on global climate commitments: negotiating the Kyoto Protocol but never ratifying it, joining the Paris Agreement under Obama, withdrawing under Trump, rejoining under Biden, then beginning another withdrawal under a second Trump administration effective in 2026. Legal scholars describe these reversals as undermining U.S. leadership on climate and its ability to pressure other nations to raise their own ambition.

The second Trump administration’s reversal of federal climate policy illustrates how fragile Biden’s achievements were. Reuters reporting and policy analysis detail how Trump’s return led to dismantling key provisions of the Inflation Reduction Act, halting billions in clean‑energy tax credits and loans, and reviving an “energy dominance” agenda focused on fossil fuel extraction. In parallel, the United States once again submitted notice of withdrawal from the Paris Agreement, and agencies began rolling back emissions standards and environmental justice tools. Much of Biden’s foreign policy shift on climate and green industry—carefully constructed over four years—was thus subjected to immediate contestation and partial rollback.

For allies and adversaries alike, the message is clear: U.S. climate‑related foreign policy remains hostage to domestic partisan cycles. Biden’s effort to rebuild credibility and provide long‑term signals to markets and partners was serious and, for a time, effective; but its durability depends on institutional buffers and political continuity that the current system does not guarantee. The consequence is a kind of structural skepticism about any single administration’s commitments, no matter how emphatically they are made.

Competing Assessments: Symbolism, Substance, and Consequences

Evaluating Biden’s foreign policy changes requires separating three questions: Did his administration materially alter U.S. behavior? Did those changes deliver strategic benefits? And how much survived subsequent reversal?

On behavior, the evidence is straightforward. The United States rejoined the Paris Agreement, funded global health and climate initiatives, re‑entered multilateral bodies, reaffirmed alliances, created new coalitions, and enacted large‑scale climate‑industrial legislation. These were not symbolic gestures alone; they changed rules, flows of money, and diplomatic patterns. On benefits, the picture is more mixed. Proponents point to renewed trust from Europe and key Asian allies, strengthened collective leverage vis‑à‑vis Russia and China, and a surge of private investment into U.S. clean‑tech industries. Critics emphasize the economic risks of regulatory costs, the competitive pressure from China in green technology, and the friction generated by Buy American requirements and unilateral trade measures.

On durability, Biden’s changes look less like a permanent reset and more like a contested interlude in a longer struggle over America’s role in the world. Climate and alliance policy moved decisively in one direction between 2021 and 2025; foreign economic policy continued the turn toward strategic protectionism; and a subsequent administration began rewinding much of the climate agenda. For a foreign policy audience, that is the lesson to carry forward: Biden demonstrated that a U.S. president can still marshal institutions, alliances, and industrial policy toward a climate‑centered strategy, but he also showed how vulnerable such a strategy is to domestic political reversal.

Sources:

theatlantic.com, usclimatealliance.org, bbc.com, unfccc.int, acslaw.org, npr.org, rgs.org, facebook.com, 2021-2025.state.gov, linkedin.com, en.wikipedia.org, wri.org, govinfo.gov, mercatus.org, econstor.eu, cato.org