As many readers–not all of them Clinton haters, I might add!–point out:
CNN:
“While federal law prohibits a person from seeking a third presidential term, the Constitution does not specify whether or not a former commander in chief can become vice president.”
U.S. Constitution, 12th Amendment:
“But no person constitutionally ineligible to the office of President shall be eligible to that of Vice-President of the United States.”
The Rev Al is always available.