Michigan's U.S. senators have unveiled legislation they say will protect the Great Lakes from oil spills.
The bill would require a review of all pipelines in the Great Lakes region, plus it would ban transporting crude oil on tanker ships. That's something that doesn't happen at all right now, but Sen. Gary Peters says it could be a threat in the future.
"This has been a possibility that's being discussed," Peters says. "It has not been done up to this point because people frankly believe that it's just unacceptable."
The bill is partially a response to widespread concern over the 60-year old oil pipeline that spans the Straits of Mackinac.