The FBI headquarters building is viewed on July 5, 2016 in Washington, DC. The FBI said Tuesday it will not recommend charges over Hillary Clinton's use of a private email server as secretary of state, but said she had been "extremely careless" in her handling of top secret data. The decision not to recommend prosecution will come as a huge relief for the presumptive Democratic nominee whose White House campaign has been dogged by the months-long probe. / AFP PHOTO / YURI GRIPASYURI GRIPAS/AFP/Getty Images