Brennan is seeking a court order to force the preservation of records in the investigations targeting him. His attorneys say he's being "vindictively singled out for investigation."
More than 1,000 grand jury presentations are under review after charges were dismissed in the "Broadview Six" case due to grand jury abuses and prosecutorial misconduct, Chicago's top federal prosecutor said.
Acting U.S. Attorney General Todd Blanche said "the Constitution is not a suggestion" and that "the Second Amendment is a sacred right belonging to all Americans.