The company offers a mix of USA Made (Berry Compliant) and imported gear. They can make things at their US plant. Call 'em up and ask 'em... as they mention on their website.
The gear also has a lifetime warranty, which I saw recently implemented for someone on another forum. He had a strap clip (that attached to a sewn d-ring) fail after a decade of use. The spring clip failed. He called them; they had the part he needed shipped out the next day.
The Made In the USA train left the global manufacturing station back in the 90's, along with most US manufacturing. Just the way it is. I appreciate the sentiment, but that doesn't stop me from buying HK pistols, Toyota vehicles, or casual clothing from India. At a certain point, my pragmatism eclipses my politics.
Firms like ATS offer quality gear, but perhaps just not in the exact format you are seeking. You may have to compromise another criteria point (size, features, color, etc.) in order to find something that meets your patriotic principles. Or be willing to shell out $400 to somebody like Kifaru...
Good luck with the on-going search.