A former top counterintelligence expert at the FBI, now at the center of a political uproar for exchanging private messages that appeared to mock President Donald Trump, changed a key phrase in former FBI Director James Comey's description of how former secretary of state Hillary Clinton handled classified information, according to US officials familiar with the matter. Electronic records show Peter Strzok, who led the investigation of Hillary Clinton's private email server as the No. 2 official in the counterintelligence division, changed Comey's earlier draft language describing Clinton's actions as "grossly negligent" to "extremely careless," the source said. The drafting...