No they don't!
All they have to do is get their person elected.
Imho, that would do it.
Whether economic collapse, subversion, or blood in the streets, all can be 'managed' from on high. Look at the way the Feds managed to take the depression of the 30s and extend it with poor policy, in a day and age when few enough ran on credit, and most went to church on Sundays.
Now, with the current dependency mindset, there would be riots and hell to pay.
A few of the 'right' appointments and a few anti-constitutional laws and SCOTUS rulings and we have real tyranny or civil war.
A few more and the dollar goes right down the crapper, and we are in recievership as a nation.
Either works from a global standpoint to neutralize the US.
And then we have the invasion of illegal aliens in progress, which alone might be enough.