
William Ruckelshaus, Administrator of the Environmental Protection Agency (1970–1973, 1983–1985) (endorsed Hillary Clinton).
Tom Ridge, United States Secretary of Homeland Security (2003–2005) Homeland Security Advisor (2001–2003) Governor of Pennsylvania (1995–2001).
Condoleezza Rice, United States Secretary of State (2005–2009), National Security Advisor (2001–2005). Reilly, Administrator of the Environmental Protection Agency (1989–1992) (endorsed Hillary Clinton) Colin Powell, United States Secretary of State (2001–2005), National Security Advisor (1987–1989) (voted for Hillary Clinton). Henry Paulson, United States Secretary of the Treasury (2006–2009) (endorsed Hillary Clinton). John Negroponte, United States Ambassador to the United Nations (2001–2004) Director of National Intelligence (2005–2007) United States Deputy Secretary of State (2007–2009) (endorsed Hillary Clinton). Michael Mukasey, United States Attorney General (2007–2009). Mel Martinez, United States Secretary of Housing and Urban Development (2001–2003) United States Senator from Florida (2005–2009) General Chair of the Republican National Committee (2007). Greg Mankiw, Chair of the Council of Economic Advisers (2003–2005). Representative from Illinois (1995–2009) Ray LaHood, United States Secretary of Transportation (2009–2013), U.S. Carla Anderson Hills, United States Secretary of Housing and Urban Development (1975–1977), United States Trade Representative (1989–1993) (endorsed Hillary Clinton). Carlos Gutierrez, United States Secretary of Commerce (2005–2009) (endorsed Hillary Clinton). Robert Gates, United States Secretary of Defense (2006–2011) Director of Central Intelligence (1991–1993). Bill Cohen, United States Secretary of Defense (1997–2001) United States Senator from Maine (1979–1997) (endorsed Hillary Clinton). Michael Chertoff, United States Secretary of Homeland Security (2005–2009) Judge of the United States Court of Appeals for the Third Circuit (2003–2005) (endorsed Hillary Clinton). Senator from Tennessee (1971–1977) Chair of the Republican National Committee (1977–1981) Bill Brock, United States Secretary of Labor (1985–1987) United States Trade Representative (1981–1985) U.S. William Bennett, Director of the Office of National Drug Control Policy (1989–1990) United States Secretary of Education (1985–1988).