Nobody asked me, but I'm going to add my $0.02 here. :)
A friend of mine, who is a lawyer, has told me to never, ever, under any circumstances, consent to a voluntary search. So if I am eve r asked, I'm going to refuse.
That said, if an Ag Inspector or a Border Patrol Officer asks to take a look in my rig, I'm going to cooperate. I understand why the want to look, and I approve of what they are doing.
There is a lawyer in Michigan named Steve Lehto who makes interesting YouTube videos on various legal subjects. For a good, not overly long video of his titled WHEN CAN THE POLICE SEARCH YOUR VEHICLE ON THE SIDE OF THE ROAD see:
https://www.youtube.com/watch?v=49ueZ9fl78gFor those of you not familiar with the sovereign citizen movement, there are a bunch of videos on YouTube showing them at traffic stops claiming they aren't driving, they are "traveling", they don't need a driver's license because they are not driving commercially, asking the cop to "show them the law" and demanding to know why he stopped them if he doesn't have a warrant. They always refuse to exit their vehicle, and they always end on laying on the side of the road in handcuffs, under arrest and with a smashed window.
Kind of fun to watch, actually. They are as delusional and out of touch with reality as people who think the world is being run by a cabal of leprechauns and unicorns!