i guess i'll get a Sombrero and drive around....
the mandatory checkpoints i spoke of were for vehicle emissions
(on the spot inspections) dmv sniffer rigs... in Cali
with the Porosity of the Southern Border including the many Tunnels and the fact Canada has plenty of holes too into Maine...ect. there's plenty of Opportunities for Bad guys to get into this country from groups whose only purpose is to Harm Americans in the name of their cause.
From that standpoint, i suppose it's necessary for security since the shift is now from large scale operations to small scale seems to be the new way.