Unfortunately, it is my actual father... Not my father in law.
My dad and I have a tacit agreement to not discuss politics. Xmas night my wife got offended about something so she threw out some Obamacare red meat, sat back, and enjoyed the show.
Ah, father. You know, sometimes you just have to leave things alone, as you have wisely done.
I have a BIL with whom I don’t discuss things. He always sends a Christams letter with some dig at the end. I don’t read them, my wife does, just to remind me how far from reality he has strayed.
We just don’t send him one. At some point in a persons life a mental illness is just the way it is, and I’ve decided just to avoid it as much as possible.