Call me paranoid but I am not taking this letter at face value. It feels like it was meant to accomplish two things:
1. Distract from the Kavanaugh hearings
2. Convince voters, given Trump’s very high disapproval rating, that Trump is the only “real bad guy” in the administration, and that other Republicans are keeping him in check, so it’s safe to vote Republican in the mid-terms.
Whoever wrote it is a disgusting coward for being willing to let Trump avoid impeachment proceedings in order to avoid a “Constitutional crisis.” Following the 25th Amendment, literally a part of the Constitution, to begin a process that is allowed and enabled by the Constitution, does not constitute a Constitutional crisis. A Constitutional crisis is when the systems that are in place fail to keep corruption in check – such as a Congress that refuses to constrain a corrupt president by voting for his agenda and allowing him to continue nominating SCOTUS judges for lifetime positions despite the fact that he is under criminal investigation and is possibly an unindicted conspirator. A Constitutional crisis is when the system allows the president to pick the judge who may well end up overseeing their own criminal case. That’s a Constitutional crisis. That’s happening now.
This person is making excuses to retain their own power despite Trump’s unfitness for office.