If you were taking a citizenship test, you'd be going back on the boat.
Actually, the office of Vice President is defined in Article I, as well...but it's Cheney's interpretation not Biden's.
Article I, Section 3:
The Vice President of the United States shall be President of the Senate, but shall have no Vote, unless they be equally divided.
The Senate shall choose their other Officers, and also a President pro tempore, in the Absence of the Vice President, or when he shall exercise the Office of President of the United States.
Biden is a dumbass