The FBI was allowed to retain non-privileged material. While the Justice Department used special "Filter Team" procedures to review documents to determine whether they were related to legislative activity, the court found that this "would not have avoided the violation of the Speech or Debate Clause because they denied the Congressman any opportunity to identify and assert the privilege with respect to legislative materials before their compelled disclosure to Executive agents."
The FBI was permitted to retain non-sensitive information. The Justice Department used special "Filter Team" procedures to review documents for legislative relevance, but a court ruled that this would not have prevented violating the Speech or Debate Clause because it did not allow Congressmen to declare and assert their privilege regarding legislative materials before disclosure.