Yes, the Democrats claimed in the House they had enough evidence to take it to trial. They should have never taken it to trial if they didn't have enough evidence yet. You don't send it to the Senate ready for trial and then say, "Wait! Hold on! We need more witnesses!" That's not how trials work. Dems shot themselves in the foot once again.
Wut, they don't call witnesses at trials? Tell us how it works then, Perry Mason.
You have your witness list set up BEFORE the trial, so the court knows. You don't say, "We're ready for trial" and then during the trial say, "Wait! We need witnesses!" If the Dems didn't have enough witnesses/evidence, they should've never flew it into the Senate faster than a cheetah to a dead lion.