If you have exposed copper on the interior of the pans, be careful as copper reacts with some foods and the reaction is not good.
I have some Kirkland Signature from about 10 years ago that was made by All Clad and I love them. I know of some cast iron pans made in the US ( I saw them on ABC News last week -- they come pre-seasoned), but I don't know of any other pans made here.