By Justin Wingerter Staff Writer jwingerter@oklahoman.comOklahoma Attorney General Mike Hunter urged the federal government Friday to use the same law that brought down the Mafia to investigate opioid manufacturers and distributors. "From a law enforcement standpoint, I believe the most powerful tool we have to fight the opioid epidemic is the Racketeer Influenced and Corrupt Organizations Act," Hunter wrote in a letter to U.S.