DENVER (AP/CBS4) — Marijuana legalization could be going back to the ballot in Colorado — a prospect that infuriated pot legalization activists Friday. The proposal for a marijuana ballot measure came as the House started debate Friday evening on bills to regulate and tax pot. One bill would state how pot should be grown and sold, and the other would tax recreational marijuana more than 30 percent. A draft bill floating around the Capitol late this week suggests that a new ballot question on pot taxes should repeal recreational pot in the state constitution if voters don’t approve 15 percent...