Erik Gundersen

Robert F. Bukaty / Associated Press/file

Four years ago, Maine voters approved a ballot initiative legalizing recreational marijuana. Yet, there are still no marijuana retailers in the state. The industry's roll-out since since 2016 has been impeded by a number of legislative and regulatory twists and turns, including a gubernatorial veto.  But few, if any, in this emerging sector anticipated the latest obstacle.

The state Office of Marijuana Policy met Monday with medical marijuana sellers and prospective adult recreational retailers to discuss a tracking system for marijuana grown or imported for sale into Maine.