Made in U.S. isn't a factor for me, but it does seem most of the modern higher-end stuff is in the States.
Ditto.
IMHO a high-end pan could be made overseas ... by a company that insisted on maintaining and paying extra for high standards ... and end up being noticeably less than the "made in USA" high-enders, but ...
... I suspect a large enough proportion of the market for the high-end pans are also invested in the "made in USA" aspect (or believe that the overseas versions will all be like the cheap ones regardless of price) so it won't make sense to do it.