Richard Fink is among Charles Koch’s top aides. Fink is the co-founder of George Mason University’s Mercatus Center and a current member of the center’s board of directors. Fink has also served on the boards of several of Charles and David Koch’s private foundations. That includes serving as president of the Charles Koch Foundation until 2014 and as a director for the Fred C. & Mary R. Koch Foundation alongside Charles and David Koch themselves. Fink likewise sits on the board of directors for Americans for Prosperity, a “social welfare” nonprofit that doesn’t reveal its donors but spent more than $33.5 million during the 2012 election advocating against President Barack Obama’s re-election. Fink also works as chairman and chief executive of Koch Companies Public Sector, LLC, the legal, government and public affairs wing of Koch Industries Inc.