Final answer:
Senators in American government represent a state in the U.S. Congress and are responsible for making laws, representing their constituents, and overseeing the executive branch.
Step-by-step explanation:
A senator in American government represents a state in the U.S. Congress. The U.S. Congress is the legislative branch of the federal government, consisting of two chambers: the Senate and the House of Representatives. Senators are responsible for making laws, representing their constituents, and overseeing the executive branch by approving presidential appointments and ratifying treaties. They play a crucial role in the lawmaking process and in protecting the interests of their respective states.