Internal Revenue Service Commissioner John Koskinen speaks during a luncheon at the National Press Club March 24, 2016 in Washington, DC. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)
Internal Revenue Service Commissioner John Koskinen speaks during a luncheon at the National Press Club March 24, 2016 in Washington, DC. / AFP / Brendan Smialowski (Photo credit should read BRENDAN SMIALOWSKI/AFP/Getty Images)