The Department of Justice is currently dealing with the challenge of whether a career prosecutor would be willing to present a case against former F.B.I. Director James B. Comey. This case is centered on allegations that Comey misled lawmakers during testimony regarding the Russia investigation. It remains to be seen whether a career prosecutor would be willing to present a case to a grand jury or whether jurors would bring an indictment. The investigation into James B. Comey centers on whether he misled lawmakers during testimony about the Russia investigation.