FILE - In this May 31, 2002 file photo, the sun sets over the Mackinac Bridge and the Mackinac Straits as seen from Lake Huron. The bridge is the dividing line between Lake Michigan to the west and Lake Huron to the east. Michigan's attorney general and chief environmental regulator issue a report Tuesday, July 14, 2015 on the safety of oil pipelines, including one stretching beneath an ecologically sensitive area linking Lakes Huron and Michigan. (AP Photo/Al Goldis, File)

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