A study of the history of the Weimar Republic and Nazi Germany might offer some insight into that question. Going back further in time, the fall of the Roman Empire is a good case study as well.
Can you give me the short version?
With Nazi Germany, it took a world war to get rid of a lawless thug regime. And that was only after he invaded the sovereignty of other nations, because his own nation gave him a signed blank check and he first made laws that legalized his crimes before he did them. Sounds really familiar about now.
Maybe Egypt is what will save America, if she’s going to be saved. The Egyptians had the sense to see an enemy combatant in their place of leadership and throw out the bum and put him on trial.