Name one power that is only for the federal government.

Why this is the answer

Six powers on the official list belong only to the federal government: printing paper money, minting coins, declaring war, creating an army, making treaties and setting foreign policy. Name any one. The Constitution hands out these powers in Article I, Section 8, which gives Congress the power to coin money, to declare war and to raise and support armies, among many others. Article I, Section 10 then shuts the states out. No state may enter into a treaty or coin money, and without the consent of Congress no state may engage in war unless it has actually been invaded or faces danger too immediate to wait. These are matters where the country has to act as one, with a single currency and a single voice toward other nations. USCIS's 2008 lessons call the federal government a limited government, one whose powers are restricted to those the Constitution describes, while most other powers belong to the states. The study guide fills in some of the answers. The federal government can create an army to defend the nation and declare war if the country is attacked or threatened. It signs treaties with other countries, sometimes to end wars and sometimes to cooperate on matters such as trade. And only the U.S. government can print the dollar bills and coins that people use as money. The trap is picking a power that is shared, or one that belongs to the states. Taxing people is the classic shared power: both the federal government and the states can do it, so it is not "only" federal. Issuing driver's licenses and running schools are state powers, and they answer the next question on the list instead of this one. The six fall into two groups that are easy to remember. Two are about money, paper bills and coins. The other four are about dealing with the rest of the world: war, the army, treaties and foreign policy.