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Kiel Brennan-Marquez and Andrew Tutt on the Trespass Test
Michael Ramsey

At Balkinization, Kiel Brennan-Marquez and Andrew Tutt: Give the “Trespass” Test (and Judge Gorsuch) a Chance.  From the introduction:

In 2012, when the Supreme Court held in United States v. Jones that police may not engage in prolonged GPS surveillance of a car on public streets without a warrant, many scoffed. Not at the outcome, which was widely applauded, but at the reasoning: the majority opinion, written by Justice Antonin Scalia, hinged on the fact that when the police installed the GPS device on Jones’ car, they committed an act of “trespass.”  Scalia’s logic was proudly originalist:  Trespassing to obtain incriminating information was forbidden when the Constitution was ratified; hence, it is forbidden today.  By resolving the case that way, the Court sidestepped the privacy questions raised by surveillance technology like GPS and—as Justice Alito’s concurrence put it, voicing skepticism shared by many observers—“attache[d] great significance to something that most would view as relatively minor.” 
Fast forward five years, and Jones  has once again surfaced in the public conversation about privacy and surveillance—this time, because of Judge Neil Gorsuch’s confirmation hearing. Gorsuch, himself an originalist, has made no secret of his support for the Jones holding.
And further on:
This proposition—that even as the world surrounding law changes, the core principles of law stay fixed—is central to originalist reasoning. We have no ambition here to resolve grand debates about the merits and demerits of originalism writ large. What we do wish to point out, however, is that a commitment to fixed principles of law, though often associated with efforts to limit the scope of fundamental rights, can also operate in the service of fundamental rights. 
To see what we mean, one need only look to United States v. Ackerman, a recent 10th Circuit opinion written by none other than Judge Gorsuch. As relevant here, the question in Ackerman was whether a warrant is required for law enforcement to open an email that has been flagged by an internet service provider (“ISP”) as likely to contain child pornography. The government argued that the answer should be no—because, among other reasons, people have no reasonable expectation of privacy in emails they have already shared with an ISP. 
Rather than indulge that argument, Judge Gorsuch opted to apply the Jones test, which, he thought, “pretty clearly” forbids the “warrantless opening and examination of . . . private correspondence.” In reaching this conclusion, Judge Gorsuch analogized the opening of an email to the opening of a private letter, both of which “qualify as exactly the type of trespass [] that the framers sought to prevent when they adopted the Fourth Amendment.” To be sure, whether opening an email amounts to a literal trespass (akin, say, to tampering with a parked car) is not self-evident; it’s a thorny and interesting question.  But Judge Gorsuch sidestepped that question by pointing out that in the 18th century, the common law went to great lengths to protect individual dignity in the face of state power.  That simple principle was the both the beginning and the end of the inquiry. 
Cases like Ackerman complicate the idea, common in some media coverage of the confirmation process, that a judge’s penchant for constraining his legal reasoning to the application of very old principles tends to stunt the recognition of new rights. In some cases, the use of very old principles can have the opposite effect. They can help judges abstract away from the technological details and focus on what actually matters: whether the state has exceeded the bounds of its legitimate authority. In some domains, originalists do better—or at least, just as well—with this question as their progressive counterparts.