[JRutledge]

Yes you can be licensed (certification means something different here) in two different states. I doubt one state is not going to take your money if you pay them to be licensed. It is just a matter of what another state will require you do do to have a license. Some have reprocity, others have their own process that will not allow reprocity but will allow you to do what others do to get a license. Basically check your local listings.

Peace