God, just fucking leave him alone. Ignore the bluster, he's just trying to get a rise out of you. Listen, Canada, just like, be cool for four years. He's going to talk a lot of shit, and everybody knows he's full of shit. Yes, he's going to try something stupid, and when that happens, everybody knows he's going to get bitch-slapped. But right now, he's just seeking attention. He's not even sworn in. But every time you respond, it restarts the news cycle, and he knows he can keep it going with another stupid ass quote. Walk away, and let him fart into his own mouth for a while.
Look at what Greenland did. They didn't engage, and pretended Don Jr. was there for a holiday, and he just had to slink on home with nothing.