Colorado defends pot law, says other states free to legalize weed

Photo: Marijuana leaf (overused. please avoid this one) (file)(Photo: CPR/File)
Researchers want to know whether medical marijuana is effective in controlling seizures in kids.

Legal weed in Colorado isn't hurting its neighboring states. That's according to a Supreme Court filing Friday that marks the first time Colorado has defended legalized marijuana in writing.

Colorado sent the argument to the nation's highest court as a defense against a lawsuit from Oklahoma and Nebraska, which have asked the court to stop pot regulation.