Hi there and a warm welcome to the forum.
If you read through various postings in this forum you’ll realise, that outside the EU it is difficult obtaining a fairphone. Already starting with the UK.
I also recall difficulties with providers in the US due to ‘incompatibilities’ of the devices.
So, all in all I think there is no positive outlook that Fairphone will expand to North America soon.
And honestly, they have already difficulties with reliably servicing the existing markets and customers.