The motion from Sen. Rand Paul argued a former president could not be convicted after leaving office, despite the impeachment itself occurring near the end of Trump's term.
It will mark two historic firsts: Trump is the only U.S. president to have been impeached by the House twice and will be the first to face trial after leaving office.
The push would be to give the former president time to prepare and review his case.
U.S. President Donald Trump has been impeached twice due to events involving Rudy Giuliani.
While the impeachment trial will be held after Trump has left office, it’s still unclear exactly how the trial will proceed if Senate Republicans vote to convict Trump.
Trump is on the verge of being impeached for a second time, but the process to remove him from office could take place after he leaves the White House.
Trump is on the verge of becoming the first president to be impeached twice, as lawmakers move quickly to punish him over last week’s deadly U.S. Capitol attack.
A vote on articles of impeachment is expected as early as Wednesday. It could make Trump the only president in U.S. history to be impeached twice.
The president announced he would not try to fight the ouster, while analysts called the action by legislators an overt and risky power grab.