First lady Michelle Obama and Dr. Jill Biden listens as President Barack Obama speaks in the State Dining Room of the White House in Washington, Wednesday, May 5, 2010, before signing the Caregivers and Veterans Omnibus Health Services Act. (AP Photo/Susan Walsh)
- First lady Michelle Obama and Dr. Jill Biden listens as President Barack Obama speaks in the State Dining Room of the White House in Washington, Wednesday, May 5, 2010, before signing the Caregivers and Veterans Omnibus Health Services Act. (AP Photo/Susan Walsh)
- President Barack Obama and first lady Michelle Obama attend a celebration of Cinco de Mayo in the Rose Garden of the White House in Washington, Wednesday, May 5, 2010. (AP Photo/Charles Dharapak)
- Military ushers and a Mariachi band stand in the West Wing colonnade as they wait for President Barack Obama and first lady Michelle Obama to arrive at a celebration of Cinco de Mayo in the Rose Garden of the White House in Washington, Wednesday, May 5, 2010. (AP Photo/Charles Dharapak)
- First lady Michelle Obama speaks, right, talks with Sarah Wade, center, wife of Army Sgt. Ted Wade, left, who was wounded in Iraq, in the State Dining Room of the White House in Washington, Wednesday, May 5, 2010, after President Barack Obama signed the Caregivers and Veterans Omnibus Health Services Act. (AP Photo/Susan Walsh)
- President Barack Obama and first lady Michelle Obama attend a celebration of Cinco de Mayo in the Rose Garden of the White House in Washington, Wednesday, May 5, 2010. (AP Photo/Charles Dharapak)
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