The sweeping federal corruption investigation threatens to derail Gov. J.B. Pritzker’s progressive tax hike amendment, which voters will decide Nov. 3.

Illinois’ high levels of corruption damage the state’s economy, costing it $10.6 billion since 2000. States with higher levels of corruption average lower levels of economic growth.

Pressure continues to build to repair Illinois’ broken ethics laws, as more Democrats demand reform and more lawmakers face corruption charges.

Federal investigators are looking into Illinois House Speaker Michael Madigan’s relationship with multiple corporations.

The Illinois House speaker was implicated in criminal charges filed against electrical company ComEd.

Government corruption is nothing new for Illinoisans. Illinois is the second-most corrupt state in the nation, according to research by the University of Illinois-Chicago. And corruption costs the state economy more than $550 million per year. What is new? Powerful Illinois lawmakers, Chicago aldermen, local mayors and business interests are involved in what appears to be...

Lax oversight of Illinois’ little-known regional development authorities has led to questionable business arrangements with one official in particular.

Andrew Hamilton and his consulting firm have collected more than $2 million from eight regional development authorities since 2010.

Andrew Hamilton is clearly a man of many hats. But some of those hats should raise eyebrows.