Be careful referring to parts being "made" by U.S. distributors. Also realize that most overseas factories trade amongst themselves, and cooperate amongst themselves, in order for everyone to be able to offer a more complete product-line to their U.S. customers that are importing by container. It's an absolute monkey-puzzle to be certain. Anyhow, this is in no way an attempt to shed a poor light on any company. There's just so much misunderstanding by the public as to how the supply-chain really operates, where parts are really made, and through how many different channels, brands and sources they are available.
As is with everything relating to restoration parts, over-generalization usually generates misleading information.
I can't tell you how many times I've been asked "who makes your sheetmetal?"... The only answer I've got is "do you have a few hours to discuss it piece-by-piece, tooling-by-tooling, after you sign this 5-page confidentiality agreement?"