> California is the most famous example, with checkpoints at all road entryways to check for and control entrance of raw produce As someone who has crossed tha

> California is the most famous example, with checkpoints at all road entryways to check for and control entrance of raw produce As someone who has crossed that border many times in Tahoe, enforcement a) relies on the honesty from the people in the car b) runs seemingly randomly (ie more than half the time there is no checkpoint c) even when running enforcement is applied selectively based on whether you have California plates or not. I think OP is probably talking about the practical effect of success of trying to control state borders effectively vs what you see which may be mostly for show / best effort. Of course you may be replying to “mass scale” smuggling vs what independent people may try to smuggle.