Just like the old tale, if you go into Califorina witha filthy truck, you will get a ticket. I live 60 miles from the Truckee Scales, and never have washed my truck, to go into CA. Same for Banning.
US Marshalls have nothing to do with trucking. As soon as a drivers brings up calling the US Marshalls about some problem you know instantly he is full of crap. Also if a company has to provide you with air conditioning you would not see trucks getting ticketed in anti-idling states such as New York.