The key difference is that Trump, as president, was the ultimate authority on what documents are his personal documents. Any documents that he took with him are presumed personal - and that legal precedent was established with Bill Clinton[1].
Consider too that no executive branch agency can have authority over the president - that would be violation of Article 2 of the constitution. The only legal option route for legal punishing a president requires impeachment first.
Consider too that no executive branch agency can have authority over the president - that would be violation of Article 2 of the constitution. The only legal option route for legal punishing a president requires impeachment first.
[1] https://www.washingtontimes.com/news/2022/aug/22/tapes-store...