US President Barack Obama greets the crowd during an event to celebrate Independence Day and to honor military heroes and their families on the South Lawn at the White House in Washington, DC, on July 4, 2009. Getty Images logo Getty Images 5 months ago

US President Barack Obama greets the crowd during an event to celebrate Independence Day and to honor military heroes and their families on the South Lawn at the White House in Washington, DC, on July 4, 2009.