Leaking Enbridge oil pipeline near Chicago back up and running , company says . Kuprewicz also added that while it may seem like the companies should be able to more quickly identify an issue , it 's not always so cut and dry . ` Congress holds hearings after recent incidents -- including 800k-gallon Michigan oil spill . Comment: Enbridge president `` deeply concerned '' by the Michigan incident .
Leaking Enbridge oil pipeline near Chicago back up and running , company says . Congress holds hearings after recent incidents -- including 800k-gallon Michigan oil spill . Comment: Enbridge president `` deeply concerned '' by the Michigan incident .