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U.S. President Barack Obama speaks during a news conference with British Prime Minister David Cameron in the East Room of the White House January 16, 2015 in Washington, DC. The two leaders had an Oval Office meeting earlier discussing bilateral issues including economic growth, international trade, cyber security, Iran, ISIL, counterterrorism, Ebola, and Russia's actions in Ukraine. (Photo by Mark Wilson/Getty Images)

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Raymond Joseph stands outside the Haitian embassy in Washington, DC, on January 19, 2010, following a candle light vigil one week after a massive earthquake destroyed Port-au-Prince. (Alex Ogle/AFP/Getty Images)

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U.S. Army soldiers from 1-12, 1st Cavalry Division, on December 13, 2011 at Camp Virginia, near Kuwait City, Kuwait. (Joe Raedle/Getty Images)

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Umpire Carl Paganelli #124 holds a ball on the field after a play during the 2015 AFC Championship Game between the New England Patriots and the Indianapolis Colts at Gillette Stadium on January 18, 2015 in Foxboro, Massachusetts. (Elsa/Getty Images)

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Indian Prime Minister Narendra Modi (R) and US President Barack Obama walk prior to meetings at Hyderabad House in New Delhi, India, January 25, 2015. (SAUL LOEB/AFP/Getty Images)

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The US and Cuban flags in Havana, on January 16, 2015. (YAMIL LAGE/AFP/Getty Images)