If you're looking for integrity, the Republican Party is thoroughly bankrupt. Which is Trump's natural condition.

His loyalty to Russia has not changed. How many people have been convicted of illegally funneling money to the GOP??

Who are these people and why do they love the GOP?
David Correia
Andrey Kukushkin
Parnas
Fruman
Len Blavatnik
All have been charged with funneling ILLEGAL money to the GOP, ALL are Russian, some of their direct recipients are:
Sens. Mitch McConnell, Marco Rubio and Lindsey Graham.
Oleg Deripaska is said to be one of Russian President Vladimir Putin's favorite oligarchs, and he is founder and majority shareholder of Russia's Rusal, the second-largest aluminum company, bought Moscow Mitch an aluminum plant in Kentucky- thanks Mr Putin

The Senate is the court, its members are the jurors. The Chief Justice of the Supreme Court presides, and as in any court - the court cooperates with the prosecution and the defense.

Did you expect there to be no communication to the defendant? That is not how trials are conducted.

trials also have witnesses, statements under oath and disposed witnesses. the perp, if guilty usually refuses to testify, or in this case, because he is unable to state the truth.

The trial has not yet begun. No witnesses have yet been called. No testimony has yet been given.