Does the federal court have jurisdiction to hear a motion in a motion brought by defendants in a civil case brought by the Department of Justice against the Attorney General?

The government argues that this case is moot because no effective relief can be ordered at this stage for these defendants whose criminal pretrial proceedings are over. See Bernhardt v. County of Los Angeles, 279 F.3d 862, 871 (9th Cir.2002). Article III, Section 2 of the Constitution limits federal court jurisdiction to "cases" and "controversies." This case or controversy requirement exists through all stages of federal judicial proceedings. Spencer v. Kemna, 523 U.S. 1, 7, 118 S.Ct. 978, 140 L.Ed.2d 43 (1998). A number of doctrines have developed, however, to permit courts to review a case in which it is no longer possible to remedy the particular grievance giving rise to the litigation.