As I recall, the system was set up with 3 branches of government in tension. Obviously, that was naive.
The issue first showed up in 1828 election, when some of the Framers were still alive, and the US basically did nothing about it over the ensuing 200 years.
Remember it was Andrew Jackson who went around ignoring Supreme Court decisions and saying "they made their decision, let's see them enforce it".
And his abuse of executive powers during the Bank Wars to punish political enemies led to the formation of a new political party.
This was one lesson the common people never wanted to learn because it was so much easier to live on the belief that their system is intrinsically immune to abuse, it's just better, magically almost. It was bolstered by the same people's desire to feel better by pointing fingers at the "weak fools" living under dictatorships, incapable to fight. "We have rights and guns, we'll pick up arms and fight any abuse".
But when the abuses came pouring almost everyone piffled, living on the next belief that time will fix things. Sometimes it did. Or maybe one of these times will bring the shocking realization that it's easy to talk big in good times and hard to act in bad times when your skin is in the game.