Jacob Joseph `` Jack '' Lew ( born August 29 , 1955 ) is an American government administrator and attorney who is the 76th and current United States Secretary of the Treasury , serving since 2013 . He served as the 26th White House Chief of Staff from 2012 to 2013 .
Jacob Joseph `` Jack '' Lew ( born August 29 , 1955 ) is the current United States Secretary of the Treasury and an American government administrator who served as the 25th White House Chief of Staff from 2012 to 2013 .