I was staggered when the sudden abandonment of the Kurds didn't do it. If abandoning allies to slaughter doesn't make the cut, I don't know what would.

Perhaps if he came out onto the South Lawn at the White House, buck naked and grinding an open Bible against his genitals. That could possibly alienate him from a significant portion of his religious base, although I think they might just say that it shows how much he loves the scriptures.