DETROIT - The Official Committee of Retirees in the Chapter 9 bankruptcy of the City of Detroit on Sept. 11 moved in the U.S. Bankruptcy Court for the Eastern District of Michigan to remove the case to federal district court, arguing that the city is not eligible to file for bankruptcy under the state constitution (In Re: City of Detroit, No. 13-53846, Chapter 9, E.D. Mich. Bkcy.).