Marijuana: Mason Tvert says limiting pot sales to Colorado residents would be unconstitutional

Should marijuana pot shops in the state be limited to Colorado residents? This was one controversial debate to emerge this month as the governor's task force began its work dedicated to implementing Amendment 64. But Mason Tvert, one of the law's proponents, says there shouldn't be a debate at all, arguing it would be unconstitutional to prohibit out-of-state adults from buying pot. He believes it would also be bad public policy.