It's illegal, yeah. In America. In the UK and virtually every other country it's legal, so this is where most of the seedsites are based. [UK and Holland]

Bascially, you order them, and hope to fuck they get to your house without customs opening it.

Safer option would be to try and find a seedsite based in America [although, i dont know if they CAN, because surely they'd just be shutdown for selling something illegal. [they cant do that to the others though ]

Maybe try and get some seeds off a mate or something, and do a little reading and grow a few very nice plants instead of a streched one. It'd be just as good if you grow it right.