The President has the unilateral authority to determine which records are those related to his administration, and these decisions are not subject to court oversight. Before you respond with some hyperbole, I would preemptively respond that this is the law, as ruled by appelette courts. If you don't like this, you should petition Congress to change the law.
Irrelevant. Nobody is arguing about whether or not the documents are related to his administration. Why even bring that up? You don't think that being related to his administration equates to he gets to take them home with him after losing an election, do you?
Similarly, the President has the unilateral authority to decide that any document is not classified. As the Commander and Chief, the President has the final authority to declassify any arbitrary document. Further, there are many documents marked at various classification levels that are in the public domain, including newspaper articles by major news outlets.
False and also irrelevant.
False because The Atomic Energy Acts of 1946 and 1954 make anything related to the production of Nuclear Weapons inherently classified, which means they can't be declassified, even by Donald J Trump.
But let's not derail this conversation with that because the entire argument is irrelevant, as I've already explained to you in another thread (and accurately predicted you would keep coming back to this silly point):
Trump had the ultimate authority to declassify the documents in question. It would be stupid for Trump to not declassify a document he intended to bring to his home -- it is trivial for him to declassify a document.
Yes he did have that authority. But he did not have the authority to steal them and keep them in his basement after he left office. Also, none of the laws cited in the search warrant, like the espionage act for example, are dependent on whether or not the documents were classified.
Of course, Trump will continue to pretend like this whole case is about whether or not he declassified the documents he stole and kept in his basement, and then you will continue to repeat what he says, and I will continue to remind you that by repeating Trumps nonsense you're arguing that a President has the power to take any document he wants from any of the intelligence agencies and keep it for himself as a civilian - which is obviously a really freaking stupid argument.