Answer:
The Necessary and Proper Clause or the Elastic Clause
Step-by-step explanation:
Elastic Clause, is a clause in Article I, Section 8 of the United States Constitution, Article I, Section 8, Clause 18:
"[The Congress shall have Power . . . ] 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."