their powers include: the power to lay and collect taxes, to coin money, to regulate foreign and interstate commerce, to raise and maintain armed forces, to declare war, to fix standards of weights and measures, to grant patents and copyrights, and to do many other things.
several other powers are set out elsewhere in the constitution like: the power to act as commander in chief of the armed forces, to grant reprieves and pardons, to make treaties, and to appoint major federal officials.