Sen. John Marty and two colleagues introduced legislation Thursday outlining the safeguards he believes are necessary if sports betting is legalized in Minnesota.

Bills to legalize sports betting on mobile devices have advanced in both the House and Senate, but neither has gotten a floor vote and the prospects remain uncertain. Marty is wary of the proposition and said if the state is going to expand gambling access, then it needs to provide protections for problem gamblers.

“I think, five years from now, we’re going to have a lot of second thoughts,” said Marty, DFL-Roseville, about expanding gambling to mobile sports betting.