Law enforcement officials, users grapple with what's legal Laura Rigby wants fewer limits on pot in Port Huron. As a medical marijuana patient, Rigby can possess no more than two and a half ounces of usable marijuana and no more than 12 marijuana plants in a locked enclosure. But Rigby wants more for the city. She was collecting signatures Thursday for a ballot initiative that would make it legal for people 21 and older in the city to possess less than an ounce of recreational pot. [continues 1203 words]