My opinion may go against what is permitted under laws that have been crafted, but I am against checkpoints of any type. That does not mean I advocate drinking and driving. What that means is you need probable cause to inhibit my travel. If I'm driving erratically fine stop me and check. But to stop every vehicle traveling is no different than pulling someone over without probable cause IMO.
Be weary of a summit that begins with sharing bread; for the sated man is at his weakest.