Thanks for all the responses. I did not even want to respond to him at all.
My wife has a very close friend like your friend. Her friend is so kooky she was marching in the RESIST parades a year ago. She would bring Trump things up during their time together. My wife politely told her to stop doing that or it was over between them. Her friend respected that and has not raised anything political since. My wife knew there was absolutely no way that either of them was going to change the other’s views, so they declared a mutual truce and an “out of bounds” area.
It is exactly the same as with our older daughter who was corrupted by liberal high school and college.