To prevent Great Lakes oil spills, map the risks and strengthen rules

<> To prevent Great Lakes oil spills, map the risks and strengthen rules - [Commentary By Michigan U.S. Sens. Gary Peters (D-Bloomfield Twp) & Debbie Stabenow (D-Lansing)] The Senators say: "We are deeply concerned about the potential for future spills in Michigan — particularly from Line 5, a pair of 60-year old oil and gas pipelines that lie exposed in the water at the bottom of the Straits of Mackinac."