From the petition site:
We petition the Obama Administration to:
Legalize and Regulate Marijuana in a Manner Similar to Alcohol.
We the people want to know when we can have our "perfectly legitimate" discussion on marijuana legalization. Marijuana prohibition has resulted in the arrest of over 20 million Americans since 1965, countless lives ruined and hundreds of billions of tax dollars squandered and yet this policy has still failed to achieve its stated goals of lowering use rates, limiting the drug's access, and creating safer communities.
Isn't it time to legalize and regulate marijuana in a manner similar to alcohol?
If not, please explain why you feel that the continued criminalization of cannabis will achieve the results in the future that it has never achieved in the past?