Quid pro quo
Republicans have a disjointed defense of Trump as impeachment hearings are set to go public.
The "Late Show" host hits the South Carolina senator with the evidence he's trying to avoid.
They previously insisted there was no quid pro quo in the president's Ukraine phone call.
The Republican senator literally refused to read witness transcripts after demanding their release just a month ago.
WHAT'S HAPPENING
They'd rather not discuss the stunning reversal by a top Trump diplomat confirming a quid pro quo involving aid to Ukraine.
At a rally in Kentucky, Sen. Rand Paul (R-KY) went after the media and demanded they name the whistleblower.
Former federal prosecutors say the president’s interactions with Ukraine also amount to extortion, as defined by the Hobbs Act.
President Donald Trump has said that even though he did not ask for a quid pro quo, there is nothing wrong with it.
The president said even if he had demanded a political favor, asking for a quid pro quo is "not an impeachable event."
The White House counselor said she was unaware of whether U.S. "aid was being held and for how long" from Ukraine.