Quote from Capablanca:
This thread rightly belongs in the Economics section. What is wrong with protectionism is that it creates market distortion and inefficiency. A buy American policy is a de facto government subsidy. Is it a good thing to bailout the U.S. car industry? Short term it looks like a good idea but if the industry isn't viable it's a band aid that will only prolong the agony. If so it would be better to use that money elsewhere. There is an opportunity cost to be paid.
It's like in trading. Do you keep a losing position hoping it will turn around or do you sell it at a loss and move the proceeds to a better looking opportunity?
Using foreign inputs where they are the most efficient option frees up more resources to be used in areas where the U.S. is more efficient.
Maybe an argument could be made for temporary support but such measures when enacted have a terrible propensity for becoming more permanent than initially envisioned and will draw retaliatory action.
Your argument only makes sense in the frictionless world of economic theory.
What happens when you have asymetric trade? One country has open borders, the other doesn't. Where will the wealth go? It will go to the one that has closed borders.
Another problem is that labour is not as mobile as trade and technology is.
A worker can't move to China and get a job there in the bright new fields offered by globalization, he stays here to rot.
The US for decades has successfully played these trade wars very well, using agriculture as a major weapon. Well, they've met their match in China (and Japan before) who were 1) self sustaining and ONLY THEN did they 2) compete internationally. Now the US is losing the international trade wars, we need to go back to the basics and not trade with countries that's to our disadvantage.
I always say that there are 2 kinds of trade, domestic trade and international trade. Should California trade with Texas? Yes. Should the US trade with China? That's a harder one.