What Makes an Expectation of Privacy “Reasonable”? A Response to Chief Justice Roberts

Orin Kerr writes:

During the oral argument a few weeks ago in United States v. Jones, Chief Justice Roberts had some very interesting questions about the Fourth Amendment’s “reasonable expectation of privacy” test. I fear that the Chief Justice’s questions may reflect a common misunderstanding of the test. In this post, I wanted to explain the Chief’s possible error, and explain how I think the reasonable expectation of privacy test is supposed to work.