John Koskinen is a veteran of both public service and the private sector . Washington ( CNN ) -- He served as commissioner from 2009 to 2013, when he was appointed by President Barack Obama to head up the U.S. Department of Treasury. If confirmed by the Senate , he succeed acting IRS head Daniel Werfel . Werfel was appointed in May amid the IRS targeting controversy .
John Koskinen is a veteran of both public service and the private sector . He served as commissioner from 2009 to 2013, when he was appointed by President Barack Obama to head up the U.S. Department of Treasury. If confirmed by the Senate , he succeed acting IRS head Daniel Werfel . Werfel was appointed in May amid the IRS targeting controversy .