Threads on a forum do not constitute knowledge. The fact still remains that you are mailing a package to be delivered intrastate. You are not willfully breaking a law. It will boil down to 2 problems. FedEx and others will simply stop accepting snakes for delivery or you run the risk of the package being inspected and the snakes being confiscated. Even if the package is inspected and the snakes are confiscated, personally I wouldnt worry about legal problems, just being out money or snakes.