re: How did we end up at a place where Republicans and Democrats are policed differently?

NObama put his people in charge of gov't agencies. These people hired managers in each department and put liberals in those positions. Normally, a person who disagreed with prez policy would resign if they disagreed. These people have no conscience or moral code so they resist policies they do not like, and do not implement the policy.
Trump should have fired these people, but he received poor advice. He needed different advisors. You first must know who you can not trust. The repubs who betrayed Trump were the ones who advised him, such as, Pence, Mitch, Lindsay Graham, etc.
Who gave him the list of SCOTUS nominees? These Deep State repubs. Trump should be thanked for exposing the dims, globalist repubs, and all gov't agencies. Can not trust any of them, especially the intel agencies.