I have the same problem with my best friend. Long story short, he made a hard turn left and takes John Oliver and Jimmy Kimmel as news. Basically, I said this to him:
Dude, we can talk politics all day. Instead of talking about Trump, however, let's talk about the direction of the country and the results of policies that make countries like North Korea stop warmongering, or the fact that we're not in a full out war in Syria.
Remember, anon, they cannot win an actual debate. All they have is Ad Hominem, and the MSM (but I'm being redundant, here).