
White House press secretary Jay Carney speaks during his daily news briefing at the White House in Washington on Tuesday, May 21, 2013. (AP Photo/Pablo Martinez Monsivais)

White House press secretary Jay Carney speaks during his daily news briefing at the White House in Washington on Tuesday, May 21, 2013. (AP Photo/Pablo Martinez Monsivais)

White House press secretary Jay Carney speaks during his daily news briefing at the White House in Washington on Tuesday, May 21, 2013. (AP Photo/Pablo Martinez Monsivais)

** FILE ** President Obama speaks on the Internal Revenue Service's targeting of conservative groups for extra tax scrutiny in the East Room of the White House in Washington on Wednesday, May 15, 2013. Mr. Obama announced the resignation of Acting IRS Commissioner Steven Miller. (AP Photo/Jacquelyn Martin)

**FILE** President Obama speaks May 13, 2013, during a news conference with British Prime Minister David Cameron in the East Room of the White House. (Associated Press)

**FILE** President Obama walks from the Oval Office of the White House in Washington to board Marine One on May 9, 2013. (Associated Press)

White House Press Secretary Jay Carney speaks during his daily news briefing at the White House in Washington on May, 20, 2013. (Associated Press)

White House Press Secretary Jay Carney speaks during his daily news briefing at the White House in Washington on May, 20, 2013. (Associated Press)

**FILE** President Obama walks from the Oval Office of the White House in Washington to board Marine One on May 9, 2013. (Associated Press)