Capitalism... it's as simple as that.
USA won't fall apart.
Self motivated intrest is the motivator in an economic system.
Not fucking your neighbor, not brotherhood but doing what's in your best economic interest is also in the best economic interest of everyone else.
There is a balance, when it is cheaper to import a good, you import it. Eventually, the price will go up to manufacture that good in another country, then economicly it will make sense to move production again.
Just look at right now for example, alot of companies are hurting because the dollar has lost so much value in the past few months. This makes it more profitable to produce certain things and export them. In the US market prices don't change, the price of a loaf of bread or other domestically produced good stays the same. This will always happen.
Just take a logical approch to things. Things will balance out.