The actual federal crime was something about “ transporting material stolen from a relative of a candidate for federl office across states lines, “if there really is such a statute, but it let Merrick Garland play wing man
So “stolen” is the key word here, and keeping property that you know belongs to someone else is theft. “Transporting across State lines” I don’t know about but I’m sure there is a crime there.
Or so goes the thought process...