During his confirmation more than a year ago, Attorney General Eric Holder failed to notify lawmakers he had contributed to a legal brief dealing with the use of federal courts in fighting terrorism, the Justice Department acknowledged on Wednesday. “The brief should have been disclosed as part of the confirmation process,” Justice Department spokesman Matt Miller said in a statement. “In preparing thousands of pages for submission, it was unfortunately and inadvertently missed.” Still, the “amicus brief,” filed with the Supreme Court in 2004, resonates years later as Holder finds himself defending the handling of some recent terrorism cases, particularly...