This is what will happen, it's why Americans and American got into the cheaper, Chinese made goods thing in the first place, there was a LOT of demand for cheaper stuff.
People will just do less, become more poor and have less opportunities or work around the system by smuggling things from Canada or something.
Maybe there was more demand for cheaper stuff in the US because wages had been rather stagnant in relation to production efficiency for decades?
I mean you're entire premise is not great at all. Capitalistic markets require competition to work. The US itself has mostly given up on 'competitive product' competition and instead fight each other with buyouts and other financial funding means.
Kicking China out of the market will just make our goods more expensive and people will do less and become more poor while the investor class gets a little bit richer.
Maybe there was more demand for cheaper stuff in the US because wages had been rather stagnant in relation to production efficiency for decades?
There is absolutely no way people with money just choose to pay more for goods, it just doesn't happen. People with money are shrewd.
People choose to buy cheaper because they can get more with their money. It's really as simple as that.
I personally buy Patagonia clothing for all sorts of reasons, but I could still get a somewhat comparable jacket for 1/5th or less of their stuff. Most people just buy a down jacket from uniqlo even though they could afford to buy from Patagonia.