I don't know about that. I have bought some electronics crap that failed, opened it up and have seen the Made in Mexico branding. Really bad solder jobs and construction. The Chinese stuff is better.
Now it is, but it wasn't at first. As a counter example I've been buying Aguila brand ammo for quite some time, it's made in Mexico on Remington tooling (they used to make it for Remington) and I've not had a single misfire with the stuff. In addition to "normal" ammuntion, they also make some innovative, if unorthodox, stuff, like really short shotgun shells (More rounds in a tubular magazine).