44 U.S.C. 2202 - The United States shall reserve and retain complete ownership, possession, and control of Presidential records; and such records shall be administered in accordance with the provisions of this chapter.
Plus
18 U.S.C. 2702 - Whoever, having the custody of any such record, proceeding, map, book, document, paper, or other thing, willfully and unlawfully conceals, removes, mutilates, obliterates, falsifies, or destroys the same, shall be fined under this title or imprisoned not more than three years, or both; and shall forfeit his office and be disqualified from holding any office under the United States.
Simple as that, Trump is guilty and should be prosecuted.
Plus
18 U.S.C. 2702 - Whoever, having the custody of any such record, proceeding, map, book, document, paper, or other thing, willfully and unlawfully conceals, removes, mutilates, obliterates, falsifies, or destroys the same, shall be fined under this title or imprisoned not more than three years, or both; and shall forfeit his office and be disqualified from holding any office under the United States.
Simple as that, Trump is guilty and should be prosecuted.