I believe in some states, they would be able to get a permit. I don’t know who would have access to each state’s database, but it seems it would be difficult for a cop out west, to know if someone had a legitimate permit from say, VA. I don’t think the state’s databases are available to the feds, I may be wrong on that though. I would hope that the feds didn’t have access to each state’s ccw data.
Some CCW’s have a number on the back for LEO’s to call to check on the validity of said permits.