The convictions of Michael Madigan and Ed Burke, two of the most powerful figures in Illinois politics, are not just scandals. They’re symptoms of a long-standing culture of cor

Michael J. Madigan, a formidable force in the state’s politics for decades, faced federal charges of racketeering, bribery and conspiracy.

The Illinois Democrat once lauded as the longest-serving legislative leader in U.S. history has been found guilty of some charges in a mixed verdict at his federal corruption trial in Chicago.