Art. I, Sec. 8

The Congress shall have power to . . .

Commerce Clause: Art. I, Section 8, Clause 3

To regulate commerce with foreign nations, and among the several states, and with the Indian tribes;

Necessary and Proper Clause: Art. I, Section 8, Clause 18

To make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this Constitution in the government of the United States, or in any department or officer thereof.