In the Smilin' Bob Enzyte case from the Sixth Circuit, United States v. Washak, 631 F.3d 266 (6th Cir. 2010), the Court held that emails have Fourth Amendment protection. First, a summary of the holding:
(1) Warshak enjoyed a reasonable expectation of privacy in his emails vis-a-vis NuVox, his Internet Service Provider. See Katz v. United States, 389 U.S. 347 (1967). Thus, government agents violated his Fourth Amendment rights by compelling NuVox to turn over the emails without first obtaining a warrant based on probable cause. However, because the agents relied in good faith on provisions of the Stored Communications Act, the exclusionary rule does not apply in this instance. See Illinois v. Krull, 480 U.S. 340 (1987).
From the opinion:
Turning first to the subjective component of the test, we find that Warshak plainly manifested an expectation that his emails would be shielded from outside scrutiny. As he notes in his brief, his “entire business and personal life was contained within the ... emails seized.” Appellant’s Br. at 39-40. Given the often sensitive and sometimes damning substance of his emails,15 we think it highly unlikely that Warshak expected them to be made public, for people seldom unfurl their dirty laundry in plain view. See, e.g., United States v. Maxwell, 45 M.J. 406, 417 (C.A.A.F. 1996) (“[T]he tenor and content of e-mail conversations between appellant and his correspondent, ‘Launchboy,’ reveal a[n] ... expectation that the conversations were private.”). Therefore, we conclude that Warshak had a subjective expectation of privacy in the contents of his emails.
The next question is whether society is prepared to recognize that expectation as reasonable. See Smith, 442 U.S. at 740. This question is one of grave import and enduring consequence, given the prominent role that email has assumed in modern communication. Cf. Katz, 389 U.S. at 352 (suggesting that the Constitution must be read to account for “the vital role that the public telephone has come to play in private communication”). Since the advent of email, the telephone call and the letter have waned in importance, and an explosion of Internet-based communication has taken place. People are now able to send sensitive and intimate information, instantaneously, to friends, family, and colleagues half a world away. Lovers exchange sweet nothings, and businessmen swap ambitious plans, all with the click of a mouse button. Commerce has also taken hold in email. Online purchases are often documented in email accounts, and email is frequently used to remind patients and clients of imminent appointments. In short, “account” is an apt word for the conglomeration of stored messages that comprises an email account, as it provides an account of its owner’s life. By obtaining access to someone’s email, government agents gain the ability to peer deeply into his activities. Much hinges, therefore, on whether the government is permitted to request that a commercial ISP turn over the contents of a subscriber’s emails without triggering the machinery of the Fourth Amendment.
In confronting this question, we take note of two bedrock principles. First, the very fact that information is being passed through a communications network is a paramount Fourth Amendment consideration. See ibid.; United States v. U. S. Dist. Court, 407 U.S. 297, 313 (1972) (“[T]he broad and unsuspected governmental incursions into conversational privacy which electronic surveillance entails necessitate the application of Fourth Amendment safeguards.”). Second, the Fourth Amendment must keep pace with the inexorable march of technological progress, or its guarantees will wither and perish. See Kyllo v. United States, 533 U.S. 27, 34 (2001) (noting that evolving technology must not be permitted to “erode the privacy guaranteed by the Fourth Amendment”); see also Orin S. Kerr, Applying the Fourth Amendment to the Internet: A General Approach, 62 Stan. L. Rev. 1005, 1007 (2010) (arguing that “the differences between the facts of physical space and the facts of the Internet require courts to identify new Fourth Amendment distinctions to maintain the function of Fourth Amendment rules in an online environment”).
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"If it was easy, everybody would be doing it. It isn't, and they don't."
"Love work; hate mastery over others; and avoid intimacy with the government."
—Shemaya, in the Thalmud
"A system of law that not only makes certain conduct criminal, but also lays
down rules for the conduct of the authorities, often becomes complex in its
application to individual cases, and will from time to time produce imperfect
results, especially if one's attention is confined to the particular case at
bar. Some criminals do go free because of the necessity of keeping
government and its servants in their place. That is one of the costs of having
and enforcing a Bill of Rights. This country is built on the assumption that
the cost is worth paying, and that in the long run we are all both freer and
safer if the Constitution is strictly enforced."
—Williams v. Nix, 700 F. 2d 1164, 1173 (8th Cir. 1983) (Richard Sheppard Arnold, J.), rev'd Nix v. Williams, 467 US. 431 (1984).
"The criminal goes free, if he must, but it is the law that sets him free. Nothing
can destroy a government more quickly than its failure to observe its own laws,
or worse, its disregard of the charter of its own existence."
—Mapp v. Ohio, 367 U.S. 643, 659 (1961).
Any costs the exclusionary rule are costs imposed directly by the Fourth Amendment.
—Yale Kamisar, 86 Mich.L.Rev. 1, 36 n. 151 (1987).
"There have been powerful hydraulic pressures throughout our history that
bear heavily on the Court to water down constitutional guarantees and give the
police the upper hand. That hydraulic pressure has probably never been greater
than it is today."
— Terry v. Ohio, 392 U.S. 1, 39 (1968) (Douglas, J., dissenting).
"The great end, for which men entered into society, was to secure their
—Entick v. Carrington, 19 How.St.Tr. 1029, 1066, 95 Eng. Rep. 807 (C.P. 1765)
"It is a fair summary of history to say that the safeguards of liberty have
frequently been forged in controversies involving not very nice people. And
so, while we are concerned here with a shabby defrauder, we must deal with his
case in the context of what are really the great themes expressed by the Fourth
—United States v. Rabinowitz, 339 U.S. 56, 69 (1950) (Frankfurter, J., dissenting)
"The course of true law pertaining to searches and seizures, as enunciated
here, has not–to put it mildly–run smooth."
—Chapman v. United States, 365 U.S. 610, 618 (1961) (Frankfurter, J., concurring).
"A search is a search, even if it happens to disclose nothing but the
bottom of a turntable."
—Arizona v. Hicks, 480 U.S. 321, 325 (1987)
"For the Fourth Amendment protects people, not places. What a person knowingly
exposes to the public, even in his own home or office, is not a subject of Fourth
Amendment protection. ... But what he seeks to preserve as private, even in
an area accessible to the public, may be constitutionally protected."
—Katz v. United States, 389 U.S. 347, 351 (1967)
“Experience should teach us to be most on guard to
protect liberty when the Government’s purposes are beneficent. Men born
to freedom are naturally alert to repel invasion of their liberty by evil-minded
rulers. The greatest dangers to liberty lurk in insidious encroachment by men
of zeal, well-meaning but without understanding.”
—United States v. Olmstead, 277 U.S. 438, 479 (1925) (Brandeis, J., dissenting)
“Liberty—the freedom from unwarranted
intrusion by government—is as easily lost through insistent nibbles by
government officials who seek to do their jobs too well as by those whose purpose
it is to oppress; the piranha can be as deadly as the shark.”
—United States v. $124,570, 873 F.2d 1240, 1246 (9th Cir. 1989)
"You can't always get what you want /
But if you try sometimes / You just might find / You get what you need."
—Mick Jagger & Keith Richards
"In Germany, they first came for the communists,
and I didn't speak up because I wasn't a communist. Then they came for the Jews,
and I didn't speak up because I wasn't a Jew. Then they came for the trade unionists,
and I didn't speak up because I wasn't a trade unionist. Then they came for
the Catholics and I didn't speak up because I wasn't a Catholic. Then they came
for me–and by that time there was nobody left to speak up."
—Martin Niemöller (1945) [he served seven years in a concentration camp]
“You know, most men would get discouraged by
now. Fortunately for you, I am not most men!”
—Pepé Le Pew
"There is never enough time, unless you are serving it."
"The point of the Fourth Amendment, which often is not grasped by zealous officers, is not that it denies law enforcement the support of the usual inferences which reasonable men draw from evidence. Its protection consists in requiring that those inferences be drawn by a neutral and detached magistrate instead of being judged by the officer engaged in the often competitive enterprise of ferreting out crime."
—Johnson v. United States, 333 U.S. 10, 13-14 (1948)