like mentioned, there are quite a few u.s. breeders in the game today but you'll be hard pressed to find any of them vending right here in the u.s. as the possession of live cannabis seeds is strictly against the federal laws here..A lot of the breeders represented at the seedbanks like The Attitude and SOS, Herbies are from the USA.
It's just that federal law prohibits the sale of ceeds, so it is very difficult to order from or aquire them directly from the US breeders.
303, Rare Dankness, Reserva Privada, TGA Subcool. Those are well respected breeders in my book. They are available through the overseas seed banks.
I'm sure many more people will add to the list. Those are just ones that I like.