We shouldn't have to but some companies will do things for marketing that we don't think they should. Like say "made in America" for something made in South America.
This company is pretty clear on their website but for those that think beyond the USA borders, America doesn't always mean USA. So for THIS company, it's clear. For others, maybe not.
Do people living in Canada or South America automatically think "USA" when they see "American made"? I wonder.