Its not so much US or even North American gear I try to buy. Its stuff thats made that doesn't take advantage of employees and the environment.
I truly believe that if you want to find out someone's real priorities (and not just what they say their priorities are), follow their money. People claim to be all about civil rights and the environment, yet buy stuff made in China without thought. Don't get me wrong, some things can't be avoided, but when there's an obvious choice most people will buy the cheapest one.
I think the majority of people say they care, but don't really care. All my audio gear is European and North American. I'd rather pay a bit more for quality, employee rights, and the environment. I look at labels as often as possible.
As an example, I was going to buy the lower end PS Audio DAC, but didn't when I found out they moved its production to China. I guess the people of Boulder, CO weren't good enough or worth PS Audio's money any more. I also guess PS Audio isn't worth my money anymore.
I understand some companies must move production to stay in business and some consumers have very limited funds. Everyone's got to do what they've got to do. I don't have to buy anything I don't want to, which includes 3rd world communist country stuff, especially (relatively speaking) expensive commodities. I won't buy any of the Chinese gear on principle. I don't care how good it reportedly sounds. That's not a racist statement, its a pro-workers and environment statement. If China had the standards the North American and European gov'ts did, I'd have no problem with their stuff.
Not that I think North American and/or European gov't standards are anywhere near perfect, but they're far closer to it than the others.