
White House press secretary Jay Carney gives his daily briefing at the White House in Washington on Tuesday, April 9, 2013. (AP Photo/Susan Walsh)

** FILE ** Senate Majority Leader Harry Reid of Nevada during a news conference on Capitol Hill in Washington, Wednesday, Nov. 7, 2012. (AP Photo/Susan Walsh)

President Barack Obama and first lady Michelle Obama watch as children participate in the annual Easter Egg Roll on the South Lawn of the White House in Washington, Monday, April 1, 2013. (AP Photo/Susan Walsh)

President Barack Obama and first lady Michelle Obama watch as children participate in the annual Easter Egg Roll on the South Lawn of the White House in Washington, Monday, April 1, 2013. (AP Photo/Susan Walsh)

President Barack Obama greets people after arriving on Air Force One at Miami International Airport in Miami, Friday, March 29, 2013. Obama is promoting a plan to create jobs by attracting private investment in highways and other public works during a visit to a Miami port on Friday (AP Photo/Susan Walsh)

President Barack Obama greets people after arriving on Air Force One at Miami International Airport in Miami, Friday, March 29, 2013. Obama is promoting a plan to create jobs by attracting private investment in highways and other public works during a visit to a Miami port on Friday (AP Photo/Susan Walsh)

President Obama urges Congress to take action on measures to protect children from gun violence on Thursday, March 28, 2013, while speaking in the East Room of the White House in Washington. Standing with Mr. Obama are Vice President Joseph R. Biden (left) and, according to the White House, law enforcement officials, victims of gun violence and others, whom the White House did not want to name. (AP Photo/Susan Walsh)

President Obama urges Congress to take action on measures to protect children from gun violence on Thursday, March 28, 2013, while speaking in the East Room of the White House in Washington. Standing with Mr. Obama are Vice President Joseph R. Biden (left) and, according to the White House, law enforcement officials, victims of gun violence and others, whom the White House did not want to name. (AP Photo/Susan Walsh)

President Obama stands next to Homeland Security Secretary Janet Napolitano during a naturalization ceremony for active duty service members and civilians, Monday, March 25, 2013, in the East Room of the White House in Washington. (AP Photo/Susan Walsh)