What is one power that is reserved for the states?

The power to issue driver's licenses is reserved for the states as it falls under their jurisdiction to regulate matters related to the administration of motor vehicles and public safety within their borders. Each state has the authority to establish its own criteria for obtaining a driver's license, conduct driving tests, and enforce traffic laws, reflecting the principle of federalism in the U.S. system of government where states have the autonomy to govern specific local matters.

In contrast, the other options represent powers that are exclusively granted to the federal government. For instance, printing money is a power assigned to the federal treasury and central banking system, while declaring war is an authority held solely by Congress. Similarly, negotiating treaties is reserved for the President and requires Senate approval, ensuring that states do not engage in foreign relations independently. This delineation of powers helps maintain a clear division between state and federal responsibilities.