
A severe storm approaches from northern Virginia, headed towards the National Mall in Washington on Thursday, June 13, 2013. (Andrew S. Geraci/The Washington Times)

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)

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)

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

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

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)

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)

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)

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)