Necessary and Proper Clause

The Necessary and Proper Clause, also known as the Elastic Clause, is a clause in Article I, Section 8 of the United States Constitution:

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.

Since the landmark decision McCulloch v. Maryland, the US Supreme Court has ruled that this clause grants implied powers to US Congress in addition to its enumerated powers.