Any American who wants prosperity and safety for our country
I don't think safety is much of an issue, because we're essentially invulnerable barring some radical change. I do think that Trump's policies could get a lot of non-Americans killed.
My one comfort is that the president is not as powerful as people think he is, and Trump might not be able to actually do any of the things he wants to do. But on the other hand, the president can potentially wield soft power over the rest of government with great effectiveness, as we saw during the Bush years, so that's hardly a guarantee