"Little Miss Flint" Mari Copeny, 8, hugs US President Barack Obama during an event at Northwestern High School in Flint, Michigan, May 4, 2016.
Copeny wrote to the president before she traveling 12 hours by bus with more than 200 Flint residents to a congressional hearing on the city's water crisis. / AFP / Jim Watson        (Photo credit should read JIM WATSON/AFP/Getty Images)