Excuse my ignorance, but what's the reason for wanting the case made in the US? I could understand for an electronic part, but the case would seem to not present any security issues being made by an untrusted party?
My product, currently in prototype stage, is made locally here in London. I go to great lengths to ensure that (even down to raw material level where possible). It’s not economical, but that’s not why I’m doing it. I’m doing it because I believe in it. Way too many known and unknown companies just offshore manufacturing. Globalisation is bad. Support the local industry and make better things here!