Republican senators: “My mind is made up! Don’t bother me with facts.” As Nancy Pelosi said, “They’re afraid of the truth. They don’t want to see documents. They don’t want to hear from eyewitnesses. They want to ignore anything new that comes up.”
It is a basic truth that everyone knows from childhood: An innocent person will put forward any evidence they have that proves their innocence. Nobody hides evidence in their own favor. In other words, nobody covers up their innocence, they only cover up their guilt.
If the R senators vote against witnesses, it means they have joined Trump in a massive cover-up, while at the same time claiming the evidence isn’t there to prove guilt. The Republican party has declined a lot since 1974 when R senators told Nixon to step down or be impeached.
Update 1/30/2020 Nancy Pelosi nails it: “You cannot be acquitted if you don’t have a trial. You don’t have a trial if you don’t have witnesses and documentation. If Republican Senators choose a cover-up, the American people and history will judge it with the harshness it deserves.”