i've had a few problems going in to canada (vehicle searches by friendly mounties), but the us side was always a comlete joke...sometimes they wouldn't even look at us...or our drivers' licenses...
...once we went to a plus8 party in toronto (fall 96) with richie and speedy j. the place was absolutely trashed by the end. we all sat down, only to discover later that the floor, and now us by extension, was completely covered in puke. so we passed the border, in, as you put it, a "not very well state," and stinking of vomit and the general, unmistakable rave smell.
by all accounts we should have been searched or detained...