What US government department is responsible for foreign affairs?

The United States Department of State, often simply called the State Department, is the executive branch agency responsible for conducting the nation's foreign policy and diplomatic relations. Established in 1789, it was the very first federal agency created under the new Constitution, initially known as the Department of Foreign Affairs before its name was changed to include additional domestic duties that have since largely been transferred to other agencies. Its core mission is to protect and promote U.S. security, prosperity, and democratic values around the world.

The State Department serves as the President's principal foreign policy advisor, administering diplomatic missions, negotiating international treaties and agreements, and representing the U.S. at the United Nations and other global forums. Headed by the Secretary of State, who is a Cabinet member and the nation's chief diplomat, the department oversees the U.S. Foreign Service, a body of professionals who carry out U.S. foreign policy and assist American citizens abroad. These diplomats work in embassies and consulates worldwide, addressing global challenges and promoting security, prosperity, and development.

Beyond high-level diplomacy, the State Department provides essential services to U.S. citizens, such as issuing passports and visas, offering travel advisories, and assisting those caught in emergencies overseas. It also plays a role in fostering international trade, combating international crime, and administering foreign assistance programs. The department’s work is crucial for maintaining relationships with other countries and advancing American interests on the global stage.