Obama on legalizing marijuana: "Does he have numbers to back (his position) up?" (with video)

Paul Armentano (Huffington Post) replays video (03:45) of Robert Gibbs attempting to defend Obama's opposition to taxing and regulating pot:

Armentano then provides four reports for Gibb's consideration:

"Budgetary Implications of Marijuana Prohibition in the United States" (Marijuna Policy Project)

"Marijuana is top U.S. cash crop, pro-legalization analysis says" (Seattle Times)

"Taxing pot could become a political toking point" (LA Times)

"Lost Taxes and Other Costs of Marijuana Laws" (DrugScience.org)

Barack Obama