How would the state know?
They are sneaky bastards. There are Border Patrol stations on most of the rural highways in my part of Southern California. Sometimes they stop you, usually not. I've never been checked there, and they are feds so probably a non-issue for them, but there are often a couple of CA highway patrol cars there and they may care. The bigger problem is the agricultural check stations coming in from AZ. There are ag cops there, no problem. But sometimes there is a contingent of game wardens who will pull trucks out of line at random for roadside inspections and bird counts. I have been inspected by them, and it's a big pain in the ass. i have been told by reliable sources that game wardens do not need probable cause to pull you over and inspect your stuff.
