According to an article in the New York Times, a Montana home builder is promoting construction using Made in USA materials. It's not that easy.
In fact, the general contractor who came up with the idea, Anders Lewendal, said it's probably not possible to achieve 100% compatibility to the all-American building approach, according to the article. But if all builders sought American-made products, the impact could be beneficial.
A typical home uses about 75% Made-in-USA materials, he told the newspaper.