Will the US say "Wait a minute, things went too far, now that he's gone we need more checks and balances before another President tries to repeat what just happened" like when they added term limits to the Constitution after FDR, or some of the post-Watergate limits imposed on the Presidency?
Or will Trump's redefinition of government power become normalized, like the redefinition of government power that happened with the Patriot Act, TSA security theater, NSA spying on US citizens, etc. after 9/11 that was justified as anti-terrorism? Those policies were never unwound even though the wars in Afghanistan and Iraq are over, Osama bin Laden is dead, and there have been no more attacks on that scale.