Clause 3. No Person shall be a Senator who shall not have attained to the Age of thirty Years, and been nine Years a Citizen of the United States, and who shall not, when elected, be an Inhabitant of that State for which he shall be chosen.
Clause 4. The Vice President of the United States shall be President of the Senate but shall have no Vote, unless they be equally divided.
Clause 5. The Senate shall chuse 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.
The Supreme Court has not interpreted these clauses.