The Supreme Court recently agreed to hear     Carpenter v. United States, a case on whether the    Fourth Amendment protects historical cell-site records. In this    post, I want to focus on a small but potentially important part    of the Carpenter litigation: How should an originalist    Justice vote in the case? There are many different flavors of    originalism, of course, and originalist arguments often can be    used to argue for different outcomes. But in this post I want    to discuss one originalist argument that I think is    significant. Ill then ask readers to weigh in on it.  
    Lets start with the obvious: The Framers could not have    imagined a world of cell-site records. And the original public    meaning of the Fourth Amendment is open to a wide    range of interpretations at different levels of generality.    With that said, the text of the Fourth Amendment does have an    important clue about what the Fourth Amendment was originally    understood to mean that might be important to the    Carpenter case.  
    Heres the opening text of the Fourth Amendment:  
      The right of the people to be secure in their persons,      houses, papers, and effects, against unreasonable searches      and seizures, shall not be violated[.]    
    As Justice Antonin Scalia emphasized in his concurrence in        Minnesota v. Carter, the word their can be    understood as important in historical context. It signals that    to assert a Fourth Amendment violation, a persons own    self, houses, papers or effects must be unreasonably searched    or seized.  
    Heres what Scalia wrote in Carter, with    emphasis in the original:  
      The Fourth Amendment protects [t]he right of the people to      be secure in their persons, houses, papers, and      effects, against unreasonable searches and seizures . . . .      U. S. Const., Amdt. 4 (emphasis added). It must be      acknowledged that the phrase their . . . houses in this      provision is, in isolation, ambiguous. It could mean their      respective houses, so that the protection extends to each      person only in his own house. But it could also mean      their respective and each others houses, so that each      person would be protected even when visiting the house of      someone else. As todays opinion for the Court suggests,      however, ante, at 88-90, it is not linguistically possible to      give the provision the latter, expansive interpretation with      respect to houses without giving it the same interpretation      with respect to the nouns that are parallel to      housespersons, . . . papers, and effectswhich would      give me a constitutional right not to have your person      unreasonably searched. This is so absurd that it has to my      knowledge never been contemplated. The obvious meaning of the      provision is that each person has the right to be      secure against unreasonable searches and seizures in his      own person, house, papers, and effects.    
      The founding-era materials that I have examined confirm that      this was the understood meaning. . . . Like most of the      provisions of the Bill of Rights, the Fourth Amendment was      derived from provisions already existing in state      constitutions. Of the four of those provisions that contained      language similar to that of the Fourth Amendment, two used      the same ambiguous their terminology. See Pa. Const., Art.      X (1776) (That the people have a right to hold themselves,      their houses, papers, and possessions free from search and      seizure . . .); Vt. Const., ch. I,  XI (1777) (That the      people have a right to hold themselves, their houses, papers,      and possessions free from search or seizure. . .). The other      two, however, avoided the ambiguity by using the singular      instead of the plural. See Mass. Const., pt. I, Art. XIV      (1780) (Every subject has a right to be secure from all      unreasonable searches, and seizures of his person, his      houses, his papers, and all his possessions); N. H. Const.,       XIX (1784) (Every subject hath a right to be secure from      all unreasonable searches and seizures of his person, his      houses, his papers, and all his possessions).    
      The New York Convention that ratified the Constitution      proposed an amendment that would have given every freeman a      right to be secure from all unreasonable searches and      seizures of his person his papers or      his property, 4 B. Schwartz, The Roots of the Bill      of Rights 913 (1980) (reproducing New York proposed      amendments, 1778) (emphases added), and the Declaration of      Rights that the North Carolina Convention demanded prior to      its ratification contained a similar provision protecting a      freemans right against unreasonable searches and seizures      of his person, his papers and property, id., at 968      (reproducing North Carolina proposed Declaration of Rights,      1778) (emphases added). There is no indication anyone      believed that the Massachusetts, New Hampshire, New York, and      North Carolina texts, by using the word his rather than      their, narrowed the protections contained in the      Pennsylvania and Vermont Constitutions.    
      That their . . . houses was understood to mean their      respective houses would have been clear to anyone who knew      the English and early American law of arrest and trespass      that underlay the Fourth Amendment. The peoples protection      against unreasonable search and seizure in their houses was      drawn from the English common-law maxim, A mans home is      his castle. As far back as Semaynes Case of 1604,      the leading English case for that proposition (and a case      cited by Coke in his discussion of the proposition that Magna      Carta outlawed general warrants based on mere surmise, 4 E.      Coke, Institutes 176-177 (1797)), the Kings Bench proclaimed      that the house of any one is not a castle or privilege but      for himself, and shall not extend to protect any person who      flies to his house. 5 Co. Rep. 91a, 93a, 77 Eng. Rep. 194,      198 (K. B.).    
      Thus Cooley, in discussing Blackstones statement that a      bailiff could not break into a house to conduct an arrest      because every mans house is looked upon by the law to be      his castle, 3 W. Blackstone, Commentaries on the Laws of      England 288 (1768), added the explanation: [I]t is the      defendants own dwelling which by law is said to be his      castle; for if he be in the house of another, the bailiff or      sheriff may break and enter it to effect his purpose. . . .      3 W. Blackstone, Commentaries on the Laws of England 287, n.      5 (T. Cooley 2d rev. ed. 1872). See also Johnson v. Leigh, 6      Taunt. 246, 248, 128 Eng. Rep. 1029, 1030 (C. P. 1815) ([I]n      many cases the door of a third person may be broken where      that of the Defendant himself cannot; for though every mans      house is his own castle, it is not the castle of another      man).    
      Of course this is not to say that the Fourth Amendment      protects only the Lord of the Manor who holds his estate in      fee simple. People call a house their home when legal title      is in the bank, when they rent it, and even when they merely      occupy it rent freeso long as they actually live      there. That this is the criterion of the peoples      protection against government intrusion into their houses      is established by the leading American case of Oystead v.      Shed, 13 Mass. 520 (1816), which held it a trespass for the      sheriff to break into a dwelling to capture a boarder who      lived there. The court reasoned that the inviolability of      dwelling-houses described by Foster, Hale, and Coke extends      to the occupier or any of his family . . . who have their      domicile or ordinary residence there, including a boarder      or a servant who have made the house their home.      Id., at 523 (emphasis added). But, it added, the house shall      not be made a sanctuary for one such as a stranger, or      perhaps a visitor, who upon a pursuit, take[s] refuge in      the house of another, for the house is not his      castle; and the officer may break open the doors or windows      in order to execute his process. Ibid. (emphasis in      original).    
      Thus, in deciding the question presented today we write upon      a slate that is far from clean. The text of the Fourth      Amendment, the common-law background against which it was      adopted, and the understandings consistently displayed after      its adoption make the answer clear. We were right to hold in      Chapman v. United States, 365 U. S. 610 (1961), that the      Fourth Amendment protects an apartment tenant against an      unreasonable search of his dwelling, even though he is only a      leaseholder. And we were right to hold in Bumper v. North      Carolina, 391 U. S. 543 (1968), that an unreasonable search      of a grandmothers house violated her resident grandsons      Fourth Amendment rights because the area searched was      his home, id., at 548, n. 11 (emphasis added). We      went to the absolute limit of what text and tradition permit      in Minnesota v. Olson, 495 U. S. 91 (1990), when we protected      a mere overnight guest against an unreasonable search of his      hosts apartment.    
    I think we can all agree that the cellphone companys records    of which of its cell towers were associated with its customers    phone at some point in the past are, in the abstract, papers    or effects. I would think that an originalist would then want    to ask the Carter question: Whose papers or    effects are they? Presumably they are the papers or effects    of the phone company. But are they also the papers or    effects of the customer?  
    The idea of papers and effects presumably was understood to    include situations such asEntick    v. Carrington (1765), the case that helped inspire the    Fourth Amendments enactment, in which the kings officials    broke into Enticks home. Inside the home, the officials    removed all the private papers, books, etc. of the plaintiff    there found, . . . and took and carried away 100 printed    charts, 100 printed pamphlets, etc. etc. of the plaintiff there    found, and other 100 charts etc etc took and carried away. In    that setting, papers and effects likely meant something like a    persons private property. Indeed, the first draft of the    Fourth Amendment used property instead of effects.  
    The question is, can cell-site records be the users own papers    or effects? It seems like an uphill battle. Cell-site records    are a phone companys internally generated records ofhow    its network connected a communicationbetween a customer    and someone else. Cellphone customers dont know what cell    towers their phones are connecting to, or where the towers are    located. They dont know what the phone companys records say.    Thats information that the phone company generates describing    how its own network service operated that the phone company    keeps in the ordinary course of its business. Whether those    records are retained, and for how long, is up to the phone    company. Its the phone companys business and its network, and    users wouldnt see or access the records that the phone company    creates and stores.  
    Given that, to say that cell-site records belong to the user     that they are the users papers or effects  you would    need some kind of theory by which a person has some kind of    property or property-like rights in another persons records of    what they did on your behalf.  
    There are ways to get there, but Im not aware of any of those    theories being recognized in the past  much less the late 18th    century. For example, one option would be to look to contract    law or agency law. Perhaps signing the agreement makes the    phone company the agent of the user, such that the phone    company is working for the user and its company records belong,    at least in some sense, to the user. This is creative, but at    least at this point I dont see support for this theory in the    historical caselaw or other materials.  
    Id be happy to be corrected, but Im not aware of an early    court or even just a litigant suggesting that the contractual    or agency relationship made the providers records in some    sense the customers own, triggering the Fourth Amendment, its    state equivalents, or common law search and seizure principles.    There presumably were situations in the 18th or 19th century in    which two parties would enter into a contractual agreement and    the government would want records or testimony from the    provider of those goods or services concerning what the    recipient of the goods or service had done. A possibly    interesting example is hotel guest lists, which are at least    somewhat analogous to cell-site records  records by a business    of who was using a particular service and when. My    understanding is that hotel guest lists were traditionally left    open to inspection by anyone. See Jefferson    Williamson, The American Hotel: An Anecdotal History 181    (1930). The records apparently werent considered the guests    own papers, even though they were created in the course of    providing a service to the guest.  
    It would be a different case, I think, with the contents of    communications. In the case of contents, the network provider    is merely holding the private communications of the user on the    users behalf. The communications are still the users    communications. The user wrote them, or, on receipt, received    them. If I decide to store my emails on Gmails servers, for    example, they are still my emails, just as my letters are still    my letters when I send them through the postal mail.    See Ex Parte Jackson, 96 US 727, 733 (1877) (Letters    and sealed packages of this kind in the mail are as fully    guarded from examination and inspection, except as to their    outward form and weight, as if they were retained by the    parties forwarding them in their own domiciles.).  
    If Im right, an originalist might plausibly conclude that the    contents of communications are protected by the Fourth    Amendment as the users papers or effects but that the    business records of the company as to how those papers or    effects were delivered would be the companys records, not the    users.  
    Anyway, thats my tentative thinking. Im very interested to    know whether readers who are interested in originalism find    this thinking persuasive. And my apologies in advance if I have    offered a wrong or naive view of originalism. It sometimes    seems that one must be a sophisticated theorist of originalism    to truly understand what originalism means, and I admit I am    only a simple country Fourth Amendment lawyer.  
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How should an originalist rule in the Fourth Amendment cell-site ... - Washington Post