If we were just exchanging goods, that would probably be true. But we buying goods from countries with high unemployment and they aren't buying goods in return. They are buying our debt and equities. We are in effect liquidating our country to buy their goods. Their cheap imports are causing high unemployment here. And then we have to pay to support unemployed Americans in addition to what we paid for the cheap imports.
Plus the other countries do not have the same protections on their workers as the US does.
My husband visited on of his companies factories in China and he was appaled.
It was filled with young women around 18 years old with small hands to assemble circuit boards. They had to live at the factory and worked 12 hour days with minimal time off. The sad thing is it was considered a good job because it wasn’t in a farm.