Go to the US fish and wildlife web site, click on law enforcement, go to licensing, apply, it cost $100 a year, once you get your license you need to bring fish in at the nearest approved port of entry (most major airports, they have them listed on the site)to you, arrange inspection with USFW, pay the $55 per shipment import fee and you are in. Not hard, but you do have to deal with the Feds each time. Now that they know me, I clear my shipments online and never have to be inspected. Totally legal and your fish never get confiscated. Ken