Homegrown Marijuana Growing Problem in the U.S.

Mexico has for years been the gold standard when it came to illicit marijuana growing. But now small-time production in the United States is wrecking the illegal Mexican trade, the Washington Post said.

Experts say that up to half of all marijuana consumed in the U.S. -- many billions of dollars' worth -- is being produced here. It's a big change from years past, when marijuana came from Mexico and Colombia. That is hurting the bottom line of the Mexican drug cartels, where $8.6 billion of its $13.8 billion in revenue in 2006 came from marijuana sales in the United States, CBS News said.