Which of the following does NOT represent a role of Congress?

The role that does not represent a function of Congress is interpreting laws. Congress is responsible for legislative functions, which include making laws, declaring war, and regulating commerce. The interpretation of laws is primarily the responsibility of the judicial branch, specifically the courts, which evaluate the meaning and application of legislation. This separation of powers is a fundamental principle in the U.S. government, ensuring that legislative, executive, and judicial branches each have distinct functions and responsibilities. By design, this system prevents any one branch from overstepping its bounds, with Congress focused on creating laws rather than interpreting them.