It's not yet easy to buy BYD vehicles in Canada either. The first quota of 49,000 vehicles was only recently announced, and that's to be shared across all Chinese vendors.
Provided they are available in Canada. There’s only roughly 50k imports in the first year and that will be split across all Chinese manufactured EVs (not necessarily Chinese brands). I assume the majority will be Teslas from their Shanghai factory.
you can't buy BYD in the USA (thanks to Biden actually, not current admin)
BUT
there's a loophole to have a car from Canada in the USA for a year
so lease them from Canada to USA buyers for a year at a time