Michigan Gov. Gretchen Whitmer abandoned a lawsuit Tuesday aimed at shutting down an oil pipeline that runs through part of the Great Lakes but said the state would continue pursuing a separate case with the same goal. Whitmer's legal maneuver followed a federal judge's decision earlier this month to retain jurisdiction over a suit brought by Calgary-based Enbridge Inc. after the state revoked an easement allowing Line 5 to cross the Straits of Mackinac.