National Mall

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Oprah Winfrey, pictured after delivering the commencement address at Harvard University in Cambridge, Mass., on Thursday, May 30, 2013, is giving $12 million to a museum being built on the National Mall in Washington that will document black life. (AP Photo/Elise Amendola)

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Oprah Winfrey, shown following her commencement address at Harvard University last month, is giving $12 million to a museum being built on the National Mall that will document African-American life. (AP Photo/Elise Amendola, File)

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Sisters Emma Gonzalez, center, and Martha Montero [cq], left, originally from of Wahaca, Mexico wear traditional tehuanas clothing at the annual Cinco de Mayo celebration on the National Mall, Washington, D.C., Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Sisters Emma Gonzalez (center) and Martha Montero (left), originally from Wahaca, Mexico, wear traditional tehuanas clothing at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Stephanie Garcia, a dancer with the Maru Montero Dance Company, performs onstage at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Dancers with the Maru Montero Dance Company perform onstage at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Visitors wear colorful Mexican hats at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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A young girl watches performances onstage at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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A woman gets a kiss from her daughter as she relaxes with her boyfriend at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Erick Doledo of Woodbridge, Va., holds his son, Erick Jr., and listens to live music with his daughter, Samantha (left), 12, at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Sisters Emma Gonzalez (second from left) and Martha Montero (left), originally from Wahaca, Mexico, wear traditional tehuanas clothing at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Pedro Hernandez of Washington dances with his girlfriend to music performed by a live mariachi band at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Pedro Hernandez of Washington dances with his girlfriend to music by a live mariachi band at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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A woman wears a colorful Mexican hat at the annual Cinco de Mayo celebration on the National Mall in Washington on Sunday, May 5, 2013. (Andrew Harnik/The Washington Times)

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Thousands of grave markers are placed in the ground to represent victims of gun violence as religious leaders around the country begin a 24-hour vigil on the National Mall to honor the victims of gun violence since the school shooting in Newtown, Conn., Washington, D.C., Thursday, April 11, 2013. (Andrew Harnik/The Washington Times)

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Pastor Joseph Bryant of San Francisco, Calif., stands with other religious leaders around the country for a press conference as they begin a 24-hour vigil on the National Mall to honor the victims of gun violence since the school shooting in Newtown, Conn., Washington, D.C., Thursday, April 11, 2013.(Andrew Harnik/The Washington Times)

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Thousands of grave markers representing victims of gun violence are placed on the National Mall, Washington, D.C., Thursday, April 11, 2013. Religious leaders around the country begin a 24-hour vigil to honor the victims of gun violence since the shooting in Newtown.(Andrew Harnik/The Washington Times)