I thought C&C was Canadian.......
Canadian firm, during their prime, they're currently based in the "province" of Rhode Island, as part of U.S. Watercraft. But it's common practice, both in the U.S. and elsewhere, to conflate Canada as part of the U.S.
Well, probably not in Canada....
Similarly, the Irish would not be amused to be lumped in with the UK, considering how many hundreds of years it took them to rid themselves of colonial rule. Mills is an American, based in County Wicklow, possibly taking advantage of Ireland's generous tax incentives for business. I'm guessing it's not because of the weather.
Farr is often referred to as a U.S. design firm, even through Bruce Farr isn't an American. Given their scope, it would probably be more accurate to call them a global design firm. But, of course, their HQ is in Annapolis, MD, which technically makes them a U.S. firm, I suppose.
I guess the sailing industry is a lot like the Americas Cup - everyone is from everywhere and "national" labels are primarily for marketing and tax purposes.
NOTE: I don't have any sales data in front of me, but it's quite likely that C&C's primary market was the United States, which would make them, in certain respects, a "U.S. brand" - charismatic or otherwise. But certainly there was great pride among Canadians when C&C boats turned up at major North American regattas and kicked butt on U.S. and U.K. designed boats. I don't think I've ever sailed on a C&C boat, but there are still plenty of them on the water (pretty sure there's a C&C 110 moored across the way from my office).