Former NFL player on sports leagues and marijuana

It may sound strange, but, Marijuana is spreading in games... But Why?? Listen to NFL player Marvin Washington.

A recent CBS News poll showed nearly two-thirds of Americans support legalizing marijuana. But Major League Baseball, the National Football League and the National Basketball Association still punish players for using the drug, even if they live in states where it's legal. Former NFL player Marvin Washington, an advocate for marijuana use among athletes, joins CBSN to discuss.

Source: CBS News