I must confess that Julie's point has left me somewhat on the fence. I think for me there's a difference between my actions as a private individual and as a business. As an individual, I have no problem being very public with my political opinions. As a writer of fiction with a fandom that stretches across the political spectrum, I tend to stay away from explicitly political commentary, though someone would certainly be free to draw political inferences from some of the moral messages.
Relying on George's common sense as an editor, I'm not worried about being sued. Frankly, a political figure has pretty much zero chance of winning a lawsuit like that, as the bar for defamation is pretty high. Anyway, had Trump been inclined to sue over a fictionalized portrayal, he would surely have gone after the gay porn piece that hit #1 on Amazon briefly. (I checked when this anthology was announced, and it was still up.) As someone else pointed out, he didn't sue SNL either.
All of that said, some of Trump's less discerning followers might indeed retaliate. I wouldn't let that stop me from speaking out as an individual, but the business brand is, as I've said, a different issue. (People display lawn signs at their homes and bumper stickers on their cars, but small businesses don't usually put up signs on their storefronts.
I could take the anonymity option, but isn't the purpose of a cross-promotional anthology to help build the author brand? How does writing anonymously or under a penname really serve that purpose? I guess it could be worth it to express my political perspective that way, though.
Sigh! I'll have to give it some more thought.