Haven't posted in a while....

At my company we are very careful with our "Made in" claims. When in doubt, I push an "Assembled in" label. If your product has a circuit board full of electronic parts, it's nearly impossible to make a credible "Made in USA" claim. Reaching the "all or virtually all" threshold on content is going to be difficult, and even then you have to watch your sourcing on an ongoing basis.

(I make no claims concerning this manufacturer's claim...)