He likes to take things home mainly because it’s getting one over on someone or some entity. In this case the government. Saw it with the documents, the difference from others who did lesser amounts by mistake of staff, he literally refused to hand them over himself. Was correctly charged for it too.
Also his announcement doesn’t mean it’s happening. Like I said before his followers believe “I’m going to” as it already happened. Plus he is a proven serial liar, unable to tell an unembellished story.