Official acts for the president would include using the military to do something. It’s the executive branch. So yeah, he can do that. As for anything else he does that’s unconstitutional, he would have to be impeached, which both congress and the Senate would vote against now. So yea. He can get away with shit. But he can’t make legislation, he can just get Congress to write it and the Senate to sign off so the legislation goes through. Something that I don’t believe that has happened since 2009 for a 2 month span, which is when Obama forced the American Care Act through.