I hate to break it to you, but you are a bundle of emotion. And no, presidents are not allowed to take government property home with them. Even if those documents are unclassified, his actions are theft at the very least. Even documents that are unclassified may still be sensitive. If they were top secret and trump waved his wand to declassify them, chances are it was an act of unconscionable irresponsibilty. Seeing as he stole the documents and never told anyone, the government is quite rightfully gravely concerned. They would most likely want to reclassify them, which they can do.
Before you respond Lardman this response is posted by someone who has actually handled, had authorization and training with top secret and classified documents. In other words he speaks from experience and not talking points so maybe stop eating you're own foot.