I recently posted to SSRN a new draft article, The Moving Property Problem in Fourth Amendment Law, forthcoming in the Virginia Law Review. The Fourth Amendment's place-based rules create a puzzle: What rules apply when property is moved from one place to another? This is the moving property problem of Fourth Amendment law. This Article identifies the moving property problem, shows that it is a recurring issue, and offers a framework for solving it. It then develops a two-part framework for how courts should solve moving property cases.