REPUBLICANS
Trump says he has done nothing wrong, and his Republican allies in the House agree with him - not a single one voted for either of the two articles of impeachment.
They say Trump was within his rights to ask Zelenskiy to investigate the Bidens as part of a broad anti-corruption drive.
They also say Trump has the right to resist congressional demands for information.
Republican lawmakers say the Democrats' case for impeachment amounts to hearsay because it relies mostly on the testimony of mid-level officials who did not deal directly with Trump.
They say Democrats should have gone to court to force the testimony of senior officials who were directly involved in the matter after Trump ordered them not to cooperate - a process that could have taken months.
One official who could provide an eyewitness account, former national security adviser John Bolton, refused to participate in the House inquiry but said he is willing to testify in the Senate trial. It is unclear whether Republicans, who control the chamber, will agree to let him do so.
Republicans also say no actual exchange of favors took place because Zelenskiy ultimately did receive the delayed aid - as well as a meeting with Trump, although that was on the sidelines of the U.N. General Assembly and not at the White House - without agreeing to the investigations Trump wanted.
They argue that Democrats are subverting the will of voters who elected Trump president in 2016 because they do not like him or his policies, and turning the impeachment process into a partisan tool.
