Murder or Attempted Murder of a Member of Congress and Other Federal Officials and Employees: Implications in Federal Criminal Law and Procedure of Events in Tucson [January 25, 2011] [open pdf - 160KB]
From the Summary: "Jared Lee Loughner was arrested for the attempted murder of Representative Gabrielle Giffords, the murder of United States District Court Judge John Roll, and the murder or attempted murder of several federal employees. The arrest brings several features of federal law to the fore. Federal crimes of violence are usually violations of the law of the state where they occur; an offender may be tried in either federal or state court or both. Ordinarily, federal crimes must be tried where they occur, but in extraordinary cases a defendant's motion for a change of venue may be granted. In capital cases, the decision to seek the death penalty rests with the Attorney General. Should a defendant elect to assert an insanity defense, he must provide pretrial notification. In the face of that notice, the court may order an examination to determine the defendant's competence to stand trial. Federal law affords victims, including families of the deceased or incapacitated, the right to confer with prosecutors, and to attend the trial and other public judicial proceedings."
CRS Report for Congress, R41606