I can see things going about the same as the Roman Empire.
I agree (We went in depth on the Roman Republic in Western Civ.)
One of my theories is that China will try to invade and other countries may follow.
No, not China. They need us as much as we need them right now. If we don't impulsively buy their products, their economy will tank alongside ours.
I read about a fiction novel about America's government abusing their power
Could you drop a comment on my messenger and tell me the title, I'd like to read that.
Personally, I think the American government is too bureaucratic and is on the path to a leftist agenda. The few businesses we have left are failing and declaring bankruptcy, the government buys those businesses, excessive programs drain public resources, the growing gap between middle class and elite (you know, the 1% everyone was talking about, half of that 1% being a member of Congress), etc.