Support the legal battle to defend Amendment A. Last month, South Dakotans approved a constitutional ballot measure, Amendment A, to legalize marijuana for adults 21 and older by a significant margin (54% to 46%). South Dakota also approved medical marijuana, making history as the first state to enact both policies on the same day. MPP played a major role in running the campaign.Now, after losing at the ballot box, opponents in South Dakota have filed a lawsuit to overturn Amendment A. They argue…