Sen. Rand Paul's motion to hold that the Senate cannot try an impeached official who is no longer in office was defeated 55-45. Most legal scholars agree such a trial is permissible.
In 1997, the Senate voted 95-0 to restrict entry of the U.S. into future international climate treaties, ending hopes for legally binding emissions targets for the U.S.
The U.S. Senate unanimously voted to pass what would become the 26th Amendment, lowering the voting age to 18.
The Senate's attempt to repeal the Affordable Care Act narrowly failed due to a surprise defection by Sen. John McCain
'Lend-Lease' saw the United States send military hardware, oil, and food to foreign allies during World War 2
