U.S. Foreign Policy: Alliances, Diplomacy, and Sanctions

U.S. foreign policy is formulated and implemented through a complex interagency process involving the State Department, Department of Defense, National Security Council, intelligence community, Treasury Department, USAID, and other agencies. The President serves as the chief architect of foreign policy under Article II of the Constitution, while Congress exercises significant authority through its powers over appropriations, trade regulation, treaty ratification, confirmation of ambassadors, declarations of war, and oversight of executive branch activities.

The post-World War II international order, which the United States played a central role in constructing, is built on multilateral institutions including the United Nations, NATO, the World Bank, the International Monetary Fund, and the World Trade Organization. This order has faced growing challenges from great power competition with China and Russia, the proliferation of nuclear and other weapons of mass destruction, transnational terrorism, cyber threats, climate change, and pandemic disease.

The Arms Export Control Act and Foreign Assistance Act provide the primary statutory frameworks for security assistance and arms sales. The International Emergency Economic Powers Act (IEEPA) authorizes the President to impose economic sanctions during national emergencies, subject to the National Emergencies Act's requirements for emergency declarations. Country-specific sanctions legislation has been enacted for Russia, Iran, North Korea, and other nations, supplementing executive branch sanctions authorities.

The War Powers Resolution establishes a framework for congressional involvement in decisions to use military force, though Presidents of both parties have contested its constitutionality and interpreted its requirements narrowly. Authorizations for Use of Military Force (AUMFs) passed in 2001 and 2002 continue to provide legal authority for military operations, though the 2002 Iraq AUMF was repealed in 2023. Congressional debate over the scope and duration of the 2001 AUMF, which authorizes force against those responsible for the 9/11 attacks, remains ongoing.

Congress may consider updating the statutory framework for the use of military force, including replacing or reforming the 2001 AUMF, clarifying the President's authority to use force without specific congressional authorization, and strengthening War Powers Resolution compliance mechanisms. Sanctions policy options include improving sanctions targeting to minimize humanitarian impacts, addressing sanctions evasion through cryptocurrency and alternative financial channels, and establishing clearer criteria for sanctions relief.

Foreign assistance reform proposals include restructuring USAID, aligning aid programs more closely with national security priorities, increasing development finance capabilities through the U.S. International Development Finance Corporation, and expanding programs addressing global health, food security, and climate adaptation. Alliance management options include burden-sharing negotiations with NATO allies, strengthening Indo-Pacific partnerships, and developing new frameworks for technology and economic cooperation with democratic allies.

U.S. foreign policy has been shaped by the conflict in Ukraine, intensifying strategic competition with China, instability in the Middle East, and challenges to the rules-based international order. Sanctions against Russia have been expanded significantly, representing one of the most comprehensive sanctions regimes ever imposed. Indo-Pacific strategy has advanced through new defense agreements, technology partnerships, and diplomatic engagement. Congressional debates have focused on security assistance funding, the appropriate balance between competition and engagement with China, and the role of diplomacy in addressing global challenges.