Unfortunately, Trek mid-range and lower end bikes are made in China.. I was disappointed to see a 'Made in China' sticker on my Trek 820 when I bought it a few years ago.
"Unfortunately, Trek mid-range and lower end bikes are made in China.."
Same is true in other industries.
BMW makes cars/Lt. Trucks in Germany, USA and Austria; probably other places, too.
Volkswagen makes Lt. Trucks in Slovakia.
Ford, GM own subsidiaries in Germany, Sweden, Japan, Britain (and probably other places).
Manufacturing of components is spread world over.
I have remote key devices for two different European vehicles; both devices are made in Canada.
I presume, therefore, that Canada has a niche for this part.
Back to bikes. In 1983 I bought a "Nishiki Professional" racing bicycle. Each model year, they made a different version of a top of the line bike, presumably aimed at professional racers. I wasn't one.
I bought a 1982 model, brand new, for pretty low price. The frame was made and bike assembled in Japan, but the components were entirely Campagnolla (Italian).
I believe the next model year, the frame and components were all Italian. The point is: Bike parts are fairly low tech, and companies have sourced things around the world for years.
I currently have a made in the USA Trek, and that was a reason I bought it; along with best value and features. Mid-range bike, too. Not high-end.