As California legalizes pot, laws collide at US checkpoints

PINE VALLEY, Calif.  — California legalizes marijuana for recreational use Monday, but that won’t stop federal agents from seizing the drug on busy freeways and backcountry highways.
Marijuana possession still will be prohibited at eight Border Patrol checkpoints in California, a reminder that state and federal law collide when it comes to pot.
The checkpoints are up to 100 miles (161 kilometers) from Mexico and are considered a final line of defense against illegal immigration.