Technicaly your shipping it within the state you live. it is not you on that the package goes out of state before it comes back to your state. form 987 s nowhere street houston tx to 123 somewhere street Dallas TX. you still shipped to your state. Fedex is the ones that are taking it out of state but it is not like the package is leaving there care. This should not affect you by law.
Put it to you this way. If you are on greyhound you are not allowed to consume alcholic beverages. this includes you being on layover for 4 hours leaving the terminal going to a bar and buying a beer and coming back to the terminal. My mom worked for fedex and she said once a package is shipped where it goes to before its destination is out of the hands of the shipper, and reciever. as long as it does not leave that fedex facility to someone elses care you are clear.