WASHINGTON (AP) — An aide to former President Donald Trump who has claimed that he was present as Trump declassified broad categories of materials has appeared before a federal grand jury after being given immunity for his testimony. That’s according to a person familiar with the matter. Kash Patel testified Thursday after the Justice Department agreed to grant him immunity and after a federal judge in Washington entered a sealed order to that effect. He had invoked his Fifth Amendment right against self-incrimination during an earlier appearance before the grand jury. A Justice Department spokesman declined to comment.