This will be the first Senate impeachment trial in American history without witnesses called.
https://slate.com/news-and-politics/2020/01/cory-gardner-marco-rubio-ben-sasse-impeachment-cowards.html
N]ew witnesses that would testify to the truth of the allegations are not needed for my threshold analysis, which already assumed that all the allegations made are true.
Removing the president would in my opinion inflict extraordinary trauma on our nation, which is already deeply divided and polarized. Half the country would view his removal as nothing less than a coup d’etat and I ask you what scheme could Vladimir Putin come up with that would divide us more than that removal would. So I’m not going to vote in favor of tearing this country apart any further, or fueling a raging fire that already threatens our country.