Mr. Obama has an ambiguous reputation among those trying to clean up Illinois politics. “We have a sick political culture, and that’s the environment Barack Obama came from,” Jay Stewart, executive director of the Chicago Better Government Association, told ABC News months ago. Though Mr. Obama did support ethics reforms as a state senator, Mr. Stewart noted that he’s “been noticeably silent on the issue of corruption here in his home state including, at this point, mostly Democratic politicians.”