Mari Copeny, 8, of Flint, Mich. sits on the lap of her mother, Lulu Brezzell as they and other Flint residents and supporters wait outside the room where Michigan Gov. Rick Snyder and EPA Administrator Gina McCarthy testify before a House Oversight and Government Reform Committee hearing in Washington, Thursday, March 17, 2016, to look into the circumstances surrounding high levels of lead found in many residents' tap water in Flint, Michigan. (AP Photo/Andrew Harnik)

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