Oh, I thought that's what the replier was asking about. The border stuff, I think you're right that 'constitution-free zone' thing is rather hyperventilaty.

On the other hand, the notion that a bunch of uniformed, armed dudes pulling you off the I5 well north of San Diego for no apparent reason and asking things is 'a search you can refuse' is a little glib. When it happens, 'but wait there is case law' or 'I saw this on youtube' is not the first thing that comes to mind.