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- United States57
- United States. Congress. Senate. Committee on Foreign Relations, author29
- United States. Congress. House. Committee on Foreign Affairs, author17
- United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on East Asia, the Pacific, and International Cybersecurity Policy, author8
- United States. Congress. House. Committee on Armed Services, author5
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on the Western Hemisphere, Civilian Security, and Trade, author5
- United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on Near East, South Asia, Central Asia and Counterterrorism, author5
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Middle East, North Africa, and Global Counterterrorism, author4
- United States. Congressional-Executive Commission on China, author4
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Asia and the Pacific, author3
- United States. Congress. House. Committee on Appropriations. Subcommittee on State, Foreign Operations, and Related Programs, author2
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Africa, Global Health, Global Human Rights, and International Organizations, author2
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Europe, Energy, the Environment and Cyber, author2
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on Europe, Eurasia, and Emerging Threats, author2
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on the Middle East and North Africa, author2
- United States. Congress. House. Committee on Foreign Affairs. Subcommittee on the Middle East, North Africa, and International Terrorism, author2
- United States. Congress. House. Committee on the Judiciary, author2
- United States. Congress. Senate. Committee on Armed Services, author2
- United States. Congress. Senate. Committee on Banking, Housing, and Urban Affairs, author2
- United States. Congress. Senate. Committee on Foreign Relations. Subcommittee on Europe and Regional Security Cooperation, author2