Democracy is people's power and the people in the US (and frankly most of the western world) are refusing to exercise it.
Democracy is not a legal framework but a cultural outlook that requires a sense of civitas. Which is mostly lost in the west (and in most other places, too) where deference to individual power has been allowed to become fully ascendant.
We rightfully decry the state authoritarianism in places like China, but their current seemingly superior ability to accomplish broader community betterment goals seems less to do with their political structure and more to do with still having some sense and confidence and optimism that people can in fact work together.
Meanwhile official small-l liberal ideology in North America fundamentally does not believe in this at all, and the ascendant far right is openly aggressive against this concept and an explicit "might makes right" ethos is becoming more and more triumphant and embodied in Trump.
Trump will eventually die and rot but the Stephen Millers of the world will still snake around in the background looking for the next pseudo-strong man to stand up and smirk all over a compliant population that has lost its desire to work together and just wants to submit to the loudest asshole in the room.
No constitution or election or political party saves the country from this. People's power does.