Not much. Here he was speaking on the campaign trail in September.
[Clip: The word Christmas … I love Christmas. I love Christmas. You go to stores, you don't see the word Christmas. It says "Happy Holidays all over." I say, "Where's Christmas?" I tell my wife, "Don't go to those stores." I want to see Christmas. I want to see Christmas. Other people can have their holidays but Christmas is Christmas. I want to see "Merry Christmas". Remember the expression "Merry Christmas"? You don't see it anymore! You're going to see it if I get elected, I can tell you right now.]I'm not sure Presidential authority extends to telling people how to greet each other. As so often with Mr. Trump, though, it's the attitude one approves — the attitude, in this case, of defiance to the anti-Christian, anti-traditional multiculti commissars. All strength to him!