Lawmakers are once again deliberating whether to legalize marijuana for medical use, an issue that has plenty of supporters in the state Senate but has failed to become law the past two legislative cycles. Sen. Bill Rabon (R-Southport), a primary sponsor of the bill and a colon cancer survivor, has been pushing for several years for North Carolina to join the 38 U.S. states, the District of Columbia and territories that allow the use of marijuana — also referred to as cannabis — for medical purposes. Reasons given for opposition to the proposal in years past have varied. This year, many of the bill’s detractors have argued that legalization would make North Carolina’s roadways more treacherous.