Well it is illegal to possess cannabis in the US except if you have a doctors prescription and I know of no State other than California where there are shops that sell it to the public but only with a valid prescription. So I am not sure what agency would issue a permit for seeds.
You have to obtain a license and you can only do so in certain states. Even so, it is still illegal on a federal level, do not talk about that on the internet. Go buy a book on that and make some friends that have hook ups. Do not tell anyone about that kind of stuff, you will get robbed or arrested. Be careful and enjoy the ganja!