Checkpoints...what the? You're in the U.S. right? Did something change I don't know about? I moved from New Jersey to Texas, drove all 1550 miles over 3 days and 3 hotel stays. Wasn't no checkpoints...I can count on both hands the number of troopers and locals we saw on the way down. Just put it in a tupperware container or something and smoke it. If you get to an 'open air' restop with the roof and floor openings, blaze one up...just make sure it's off hours.

EDIT: I've never seen Rolling Kansas so I don't know what you speak of. But by in large, states do not maintain permanent 'checkpoints' at borders...and I've travelled through A LOT of states.