I don't take what the "made in" label says too seriously. I've seen something simple like a bolt with pressed on washer come in a package saying "made in Canada with imported parts." You can't get much simpler than a washer-headed bolt! Also have opened a parts box that says "made in Germany," only to see the inner wrapper have a sticker that says "...Korea."
Maybe USA and Canada are also the names of cities in China and Mexico!