This report discusses the draft withdrawal agreement in the the United Kingdom's (UK's) expected withdrawal from the European Union (EU), known as Brexit. It also summarizes issues for the U.S. Congress to consider in regard to Brexit.

This report discusses U.S. sanctions against Iran and the 2016 Joint Comprehensive Plan of Action (JCPOA) nuclear agreement which led to the lifting of sanctions based on nuclear proliferation in Iran. It outlines the various sanctions against Iran and their current implementation status, international efforts to bring about compliance, and their effects; it also addresses recent discussions regarding President's Trump announcement that the U.S. was decertifying the nuclear agreement and the possibility of reinstating certain sanctions.

This report examines the meaning of the national security exception in Article XXI of the General Agreement on Tariffs and Trade (GATT)--a provision also implicated in a recent World Trade Organization (WTO) dispute between Russia and Ukraine; a blockade of Qatar by Saudi Arabia, Bahrain, and the United Arab Emirates; and a few other disputes.

This report provides a comprehensive overview of U.S. sanctions against Russia. It provides an overview of U.S. sanctions authorities and tools; describes various sanctions regimes that have been used and entities or that are available for this purpose, addressing authorities, tools, targets, and historical context; briefly discusses countersanctions by Russia; addresses the evolution of U.S. coordination with the European Union; and assesses the economic impact of sanctions on Russia at the level of the national economy and individual firms.

This report provides a brief overview of United States tariff policy. A tariff is a customs duty levied on imported and exported goods and services, typically used to protect domestic industries or as leverage in trade negotiations and disputes.