If my business is local, buying from local suppliers as much as possible and employing local people it shouldn’t matter at all, if these local employees are ethnically the same and all have the same nationality.
So i would take it more as the former, ultra nationalist.
But I wouldn’t take “100% American company” to mean all employees are American citizens. I would take it to mean that all employees are living in and working from the US. Which makes it more ambiguous than your interpretation of the phrase.
If my business is local, buying from local suppliers as much as possible and employing local people it shouldn’t matter at all, if these local employees are ethnically the same and all have the same nationality.
So i would take it more as the former, ultra nationalist.
I do think it’s more likely to be the former.
But I wouldn’t take “100% American company” to mean all employees are American citizens. I would take it to mean that all employees are living in and working from the US. Which makes it more ambiguous than your interpretation of the phrase.