Cornwell makes there own in mogadore ohio. They are very good wrenches and ratchets. Their Screwdrivers are made by Whitte in germany.
They, like every other tool truck, offer a cheaper line of tools called blue power. some are usa made, but most are rebranded gearwrench or sunex
I found a couple of "Blue Power" sockets mixed-in with the rest; I'm glad you mentioned that those are the discount line.
Snapondave says they only make ratchets and breaker bars. You say they make wrenches and sockets.
I don't know who to believe; and of course the Cornwell web site isn't going to clarify anything. When I was looking for a roto-ratchet, I know I couldn't buy Cornwell because it was a subcontracted deal--the same Asian product other companies sell, but with a blue handle and the price doubled.
I get the sense that Corny is like Matco--they make 1% of what's in the catalog, and buy-in everything else from the low bidder. Mac does plenty of that, but at least they've got corporate-family manufacturing via Proto and the rest of the Stanley Empire.