Political Show Trial

It is a given that Trump cannot be convicted.  In any normal proceeding, the prosecutor would drop the case rather than have the jury acquit.  It is a waste of time and money to pursue a case that cannot be won.  So what is the point?

First, it is a political show trial.  The winning party wants to march the losing party around and throw rotten fruit.  Yeah, this is just the thing to promote 'unity' in the wake of a disputed election.  Brilliant.

Second, it is a distraction.  During the Obama Administration, there was always the latest scandal - at least on Fox News - that was overshadowed by the next one before the last one played out.  It turned out that the press, and the public, have a short attention span.  Obama would do something - say, the Iran Deal or drone strike an American in the Middle East, or say you could keep your doctor, etc - and the press would jump on it.  Before the story could really rise to the level of a national scandal, he'd rollout something else that would be the new feeding frenzy, the last one forgotten.  It was a surprisingly effective tactic.  In fact, because none of the stories was ever pursued in depth, he left office with a supposedly scandal-free administration.  Trump did something very similar.  He would diminish a war hero, imply a rival's father was involved in the Kennedy Assassination, spout demeaning nicknames, attack the press as fake news, and so forth.  While the media frothed on about his bad manners, he would advance his agenda out of sight.  While a pointless impeachment unfolds, all eyes will be on it.  What is going on where it matters?

Third, demonstrate the uselessness of the government.  Congress doesn't really do anything.  Despite being the first branch of government, it has voluntarily reduced itself to the third.  Each party plays defense for their guy in the White House and mostly follows the president's lead.  Rather than risk angering the voters by making any real decisions, they delegate all the tough decisions to the courts - who can't be voted out - or various bureaucrats - who also can't be voted out.

Forced to choose, I would select "all of the above."