If you live in Pennsylvania, write your state lawmakers to ask them to support regulating — not prohibiting — cannabis for adults' use. In the past two months, the conversation about whether Pennsylvania should legalize and regulate marijuana for adults has picked up steam. In December, Gov. Tom Wolf (D) said the state should take a "serious and honest look" at legalization. Then, in January, Lt. Gov. John Fetterman announced a statewide listening tour on legalization that begins today in Harrisburg. The…