What is NOT a responsibility of the federal government?

The choice indicating "oversee state laws" is the correct answer because it identifies a function that is not typically under the purview of the federal government. In the United States, state governments have the primary responsibility for their own laws and governance, which means that individual states maintain a considerable degree of autonomy.

The federal government is established primarily to handle national matters and issues that affect the country as a whole, rather than interfering in the internal affairs of states unless it pertains to federal law, constitutional rights, or other matters that require federal oversight.

In contrast, printing money, declaring war, and conducting foreign affairs are all key responsibilities assigned to the federal government. Printing money is managed by the U.S. Department of the Treasury, declaring war is a power vested in Congress, and conducting foreign affairs is primarily the responsibility of the President and the State Department. These functions reflect the federal government's role in maintaining national security, monetary stability, and international relations.