While the State Department’s own internal probe found former Secretary Hillary Clinton violated federal recordkeeping laws, it’s not the first time she and her top aides shielded her e-mail from public disclosure while serving in a government position. As first lady, Hillary was embroiled in another scheme to bury sensitive White House e-mails, known internally as “Project X.” In 1999, as investigators looked into Whitewater, Travelgate, Filegate and other scandals involving the then-first lady, it was discovered that more than 1 million subpoenaed e-mails were mysteriously “lost” due to a “glitch” in a West Wing computer server. The massive hole...