J Robert Barr
Former head of the Republican Party in Cook County, Illinois
Tyrone C Fahner
Partner, Mayer Brown | President, Civic Committee of the Commercial Club of Chicago
David Koch
Billionaire industrialist; helped fund vast conservative, libertarian political operation
Frederick A Krehbiel
Co-Chairman, Molex Incorporated; with his brother, sold Molex to David and Charles Koch for $7.2 billion
David W Grainger
Senior Chairman, WW Grainger
Roger W Stone
Chairman and Chief Executive Officer of KapStone Paper and Packaging Corporation