What does the Secretary of State primarily oversee?

The Secretary of State primarily oversees foreign affairs because the position is responsible for managing the country's relationships with other nations and representing the United States at international levels. This includes negotiating treaties, engaging in diplomacy, and overseeing the State Department, which implements U.S. foreign policy. The role is pivotal in shaping and directing the nation's foreign relations and addressing global issues, making it central to the Secretary of State's responsibilities.

The other options relate to different government functions: military operations fall under the Department of Defense, domestic policy is typically managed by the President and domestic agencies, and economic legislation is primarily the domain of Congress and specific economic departments. Hence, the focus of the Secretary of State on foreign affairs distinctly sets this role apart in the context of U.S. governance.