That said, instituting similar sanctions against the US should absolutely be the number one thing the rest of the world responds with! It might not be every US citizen that is culpable, but they are your representative government, and your responsibility. (I assume you're from the US, but I use "your" as a collective for anyone from the US that may be reading this).
Do you think the people might take a legitimate stand if business dealings, travel, and exports were banned to the United States? Do you think US citizens would go absolutely fucking crazy?
> As for fixing things, the government has become literally unmanageable, and things are a mess right now
Well untangle yourselves and then we'll talk.
Unfortunately, the US has so much power around the world that most countries are literally unable to respond. They are the new Rome, using political and economic power rather than pure force (but use force where necessary) to control the world. It's disgusting.