So, you have become the supreme dictator of the United States of America. What do you do and why?
You have absolute authority, you cannot be impeached, and you have the backing of the military so you do not have to worry about an uprising.
Everything else about the US government stays the same. All other government officials are democratically elected, the social/political climate is the same as it is now, et cetera.
Please try to be a benevolent dictator, we have already seen plenty of terrible tyrants in real life so it would be much more interesting to see what an all powerful ruler would do if they were legitimately concerned for the public good.