Marijuana possession still will be prohibited at eight Border Patrol checkpoints in California, a reminder that state and federal laws collide when it comes to pot. The U.S. government classifies marijuana as a controlled substance, like heroin and LSD. "Prior to Jan. 1, it's going to be the same after Jan. 1, because nothing changed on our end,"
Despite Legalization, Border Patrol Will Go After Marijuana at California Checkpoints
At highway checkpoints, Border Patrol agents look for signs of nervous drivers, like clutching steering wheels and avoiding eye contact and interrupting when passengers are asked to state citizenship. Some panicked drivers make a U-turn when they spot the checkpoint, a dead giveaway.