Medical marijuana sponsors in the House offered opponents a compromise: no smoking.

Law enforcement negotiators responded: no thank you.

The result is a stalemate that has stalled the bill, says Rep. Carly Melin, DFL-Hibbing, who sponsored the bill that would make Minnesota the 21st state to legalize medical marijuana. She is calling on the governor to break the deadlock.

Over the weekend, Melin said she offered a series of changes to the bill to satisfy the major objections law enforcement groups have had to the legislation. She offered to allow doctors to prescribe cannabis as a pill, liquid or vapor. But anyone caught smoking medical marijuana would face penalties.

Melin's also offered to strip out provisions that would allow patients to grow up to six plants in their own homes, and to narrow the language to allay concerns that people could fudge their way into a marijuana prescription -- changing "severe and debilitating pain" to "intractable pain."

Despite the changes, law enforcement remained strongly opposed to the bill, pending more in-depth research into marijuana's medicinal properties. John Kingrey, executive director of the Minnesota County Attorneys Association, said he believes Melin and other supporters are sincere in their desire to help sick and dying Minnesotans, but the dangers of drugs may still outweigh the potential benefits.

"We are concerned that medical marijuana will make its way into the hands of Minnesota teens," Kingrey said.

Philosophically, he said, the gulf between the two sides is probably too wide to find a compromise during this year's brief session.

"Given the short session and the technical aspects of the bill, I just don't think there's time" to reach a consensus, he said.

Melin asked the House Government Operations Committee to postpone a scheduled Tuesday morning hearing on the legislation and appealed to the governor to mediate.

In a statement, she said: "Governor Dayton has been consistent that his support of a medical marijuana bill is contingent on support from law enforcement. I have attempted to compromise with law enforcement over the past few months and offered several major concessions, but they have been unwilling to accept a proposal that would allow Minnesota to join 20 other states in permitting patients safe, regulated, and legal access to medical marijuana. I will continue to stand with Minnesotans who support the Compassionate Care Act and remain hopeful we can make progress, but right now we are at a stalemate with law enforcement and I don't see a path forward until the governor changes his position."

The medical marijuana bill cleared the House Health and Human Services Policy committee by a voice vote last week.

The proposed compromise language