H&H, I actually agree with you on something, although my take on it is probably somewhat different. I am becoming an isolationist, not because I believe it's the best path, but because I believe it will show a lot of countries just exactly what the USA truly provides to the world.
Close up shop on all the foreign military bases, bring those soldiers home and put them in bases on the borders and coasts. Quit spending all that money overseas and let that payroll circulate through the US economy. Make it damn near impossible to get a passport or visa to get in the country, reserve that only for citizens of our most trusted and loyal allies. Enact trade policies that call for equal dealing. We charge exactly the same tariff that the trading partner country imposes. Eliminate all foreign aid. Focus making Canada and Mexico our primary trade partners, buy no more Middle East oil. Import no more Chinese steel.
All these people think we're evil? Fine, we'll leave them alone, but not just when it comes to policy, we'll leave them alone economically. Screw the whole world economy thing. If US companies want the protection of the USA then they can bring their operations back in to the USA.
We are only about 4.5% of the world's population, but we account for 22% of the world's GDP. We don't need anybody else.