Witnesses for Impeachment

It looks like Moscow Mitch and Graham have no problem supporting a criminal president.  Probably because they are getting money from the same area.  If we really want to know the truth, they would let 4 witnesses take the stand:  Perry, Bolton, Mulvaney, and Pompeo.  Will they?  McConnell does not want them to.  He knows what the truth is.  He feels that the American people can no handle the truth.  So, they are manufacturing propaganda to distract people.  My favorite is that people say that no crime has been committed because they have no evidence and/or witnesses.  You mean the people Trump will not let testify?  If they can't testify, how do we know there is nothing there?   Because of who Trump is, I believe they have the answers.  Just look at Bolton.  He quit!  Why?  What was so bad that he decided he could no longer work for Trump?  Remember, Bolton is a hard core right wing diplomat.