I'm only upset that Trump would call FIFA and then they would just cave. That's bad. As I understand it there's an actual rule cited that allows them to do what they did. So if that's indeed the case then nobody can say they made up a special rule just for the US. Even if it's a first time thing, if there's a basis for it, then there's a basis for it. FIFA should have simply done this review on their own, using the rule that they cited, without a Trump phone call.
I don't think anyone should be OK with the President of a host country making a call to FIFA. It's a terrible precedent. I guess FIFA is allowing Belgium to lodge their appeal too, so until game time I'm not taking it for granted that he will play. They might reverse the reversal. This whole thing has created a huge distraction from what has otherwise been an amazing World Cup.