Clinton Cash: The Untold Story of How and Why Foreign Governments and Businesses Helped Make Bill and Hillary Rich is a 2015 "New York Times" bestselling book by Peter Schweizer in which he investigates donations made to the Clinton Foundation by foreign entities, and etc, The Clinton Foundation (founded in 1997 as the William J. Clinton Foundation), and from 2013 to 2015, briefly renamed the Bill, Hillary & Chelsea Clinton Foundation) is which type of organization under section 501(c)(3) of the U.S. tax code?