Reefer Madness: The High Cost of Fighting Drugsbr Commonwealth Club - The Commonwealth Club of Californiabr Marijuana is by some estimates California's largest cash crop, bringing in more than twice the revenue of vegetables, yet we don't tax this green. Legalizing and taxing pot could provide $1.3 billion to help our hemorrhaging economy, but it might also lead to additional problems and undermine anti-drug efforts. Is this crop just cash waiting to be reaped, or is it more complicated? Come hear advocates on both sides argue the pros and cons of legalizing marijuana.