The announcement by the Justice Department's inspector general that his office will look into FBI Director James B. Comey's handling of Hillary Clinton's emails reopens painful questions about the 2016 election, but it is also welcome news. The investigation will address allegations that Comey violated established Justice Department and FBI policies and procedures in his July 5, 2016, public announcement concerning the Hillary Clinton email investigation. And it will explore allegations that Comey's Oct. 28 and Nov. 6 letters to Congress, which jolted the presidential election ... were improper. In addition to looking into the actions of the FBI director regarding the email investigation, the probe will look into whether the FBI's deputy director should have recused himself from the investigation because of his wife's political involvement; whether a high-ranking Justice Department official or others improperly disclosed non-public information to both the Clinton and Trump campaigns; and whether the timing of the FBI's election eve Freedom of Information Act disclosures relating to Bill Clinton's 2001 pardon of Marc Rich was based on inappropriate considerations. This investigation has bipartisan support. It was requested by the chairman and ranking members of multiple congressional oversight committees. Federal inspectors general, who do not leave with the change of administrations ... are the only political appointees whom the law requires be selected "without regard to political affiliation and solely on the basis of integrity."