"While New Mexico appears willing to come into compliance, according to Duffy, California remains indignant."
How to deal with CA on this:
Put up DOT checkpoints at all border crossings on main highways to Arizona, Nevada, Oregon.
Administer an on-the-spot "language and reading test" to all heavy trucks crossing the line.
Driver can't speak/read English at the most basic levels ??
Then... turn the truck around, right back into California.
Do this for a week, and I predict that things will change.
Like Butch said to Sundance after he placed explosives on the baggage car:
"That oughta do it...!"