Leaking Enbridge oil pipeline near Chicago back up and running , company says . Congress holds hearings after recent incidents -- including billion - dollar Michigan oil spill . Hearing witness : ` ` My grand - old asks me frequently , ' am I going to get cancer ? ' '' The 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 . Hearing witness : `` My 12-year-old asks me frequently , 'am I going to get cancer ? ' '' Enbridge president `` deeply concerned '' by the Michigan incident .