He can be removed from office by Congress after the midterms if the population shows up to vote for that happening. They won't, of course, because the American people as a whole do not want him removed from office, but the mechanism is there.

He will also probably stand for re-election, and if he does he probably will win despite it being in violation of the constitution, because by all accounts the American people collectively prefer the concept of Supreme Leader Trump to the scrap of toilet paper that is their constitution. That is the nature of democracy. It gives the people what they want, even if what they want is very stupid and harmful to themselves.