The attenuation doctrine applies under the Washington Constitution, but it is more narrowly applied than the Fourth Amendment’s. Here is it not satisfied, and there are no intervening circumstances. State v. Mayfield, 2019 Wash. LEXIS 70 (Feb. 7, 2019):
¶62 We have previously indicated that the Wong Sun version of the attenuation doctrine applies as a matter of state constitutional law. E.g., State v. O’Bremski, 70 Wn.2d 425, 428, 423 P.2d 530 (1967). We now explicitly adopt a state attenuation doctrine that is satisfied if, and only if, an unforeseeable intervening act genuinely severs the causal connection between official misconduct and the discovery of evidence. If such a superseding cause is present, then the evidence is not properly viewed as “fruit of the poisonous tree” but, instead, as “fruit” of the superseding cause. In such a case, the State derives no benefit from its officers’ unconstitutional actions. And because a superseding cause must, by definition, be unforeseeable, this narrow attenuation doctrine will not encourage officials to violate article I, section 7 in the hopes of discovering evidence.
¶63 We caution that the attenuation doctrine we adopt today must be narrowly and carefully applied. The State bears the burden of proving that the attenuation doctrine applies and that evidence is admissible despite a violation of article I, section 7. Armenta, 134 Wn.2d at 14. To meet its burden, the State must prove that unforeseen intervening circumstances genuinely severed the causal connection between official misconduct and the discovery of evidence. The State cannot meet its burden by merely showing that there are one or more additional proximate causes of the discovery of evidence. The question of whether intervening circumstances constitute a superseding cause is a highly fact-specific inquiry that must account for the totality of the circumstances, just as it is in the context of tort law. See Maltman v. Sauer, 84 Wn.2d 975, 982, 530 P.2d 254 (1975).
¶64 We also caution that the narrow attenuation doctrine we adopt today is entirely independent of the modern attenuation doctrine used by federal courts. As such, it is irrelevant to our state attenuation doctrine whether suppression in one case will deter similar misconduct in the future. It is also irrelevant whether the officer’s misconduct was merely negligent or was instead flagrant and purposeful. The only question is whether unforeseeable intervening actions genuinely severed the causal connection between official misconduct and the discovery of evidence. If not, then the attenuation doctrine does not apply, and the evidence must be excluded in accordance with article I, section 7 and our state exclusionary rule.
C. The Washington attenuation doctrine is not satisfied here
¶65 Although the trial court did not have the opportunity to rule on Mayfield’s suppression motion in accordance with the narrow attenuation doctrine we adopt today, its findings of fact are sufficient for us to decide the issue as a matter of law. It is plain that the State cannot carry its burden of proving that the causal chain between the official misconduct and the discovery of evidence was genuinely severed by intervening circumstances in this case. We therefore hold that Mayfield’s motion to suppress must be granted.
¶66 As related in the facts section above, Officer Nunes illegally seized Mayfield and requested consent to search his person and his truck while the illegal seizure was ongoing. The requests to search were certainly not unforeseeable intervening circumstances. As found by the trial court, these requests were a purposeful component of “a drug investigation that was not based upon any reasonable and articulable suspicion of actual criminal conduct.” CP at 20.
¶67 Mayfield’s consents to the two searches were also not independent acts of free will sufficient to establish a superseding cause. The State relies heavily on the fact that Mayfield was told he could refuse, limit, or revoke consent to the search of his truck, arguing that these Ferrier warnings made Mayfield’s consent “an informed decision” and thus “‘an independent act of free will’” sufficient to satisfy the attenuation doctrine. Suppl. Br. of Resp’t at 20. We cannot agree.
. . .
¶71 Finally, it is clear that if the state attenuation doctrine is satisfied solely by an unlawfully detained suspect’s consent to search after Ferrier warnings, then the attenuation doctrine would not be a narrow exception to the exclusionary rule at all. To the contrary, it would be broadly applicable to any case where officials remember to use the appropriate “magic words” after violating a person’s article I, section 7 rights. Such a broad rule would do little to protect individual privacy and would thus be inconsistent with article I, section 7 and our state exclusionary rule. It would also distort the purpose of Ferrier, which is to ensure that a person who has not been illegally seized can make an informed decision as to whether to consent to a search of his or her home. Ferrier, 136 Wn.2d at 118. Ferrier warnings were never designed to “purge the taint” of ongoing unlawful seizures for purposes of the attenuation doctrine.
¶72 It is clear from the trial court’s findings that there were no intervening circumstances here that severed the causal connection between Mayfield’s unlawful seizure and the discovery of the money and methamphetamine used against him at trial. Without such intervening circumstances, our state attenuation doctrine cannot apply. Therefore, the evidence must be suppressed.
"If it was easy, everybody would be doing it. It isn't, and they don't." —Me
"Life is not a matter of holding good cards, but of playing a poor hand well." –Josh Billings (pseudonym of Henry Wheeler Shaw), Josh Billings on Ice, and Other Things (1868) (erroneously attributed to Robert Louis Stevenson, among others)
“I am still learning.” —Domenico Giuntalodi (but misattributed to Michelangelo Buonarroti (common phrase throughout 1500's)).
"Love work; hate mastery over others; and avoid intimacy with the government."
—Shemaya, in the Thalmud
"It is a pleasant world we live in, sir, a very pleasant world. There are bad people in it, Mr. Richard, but if there were no bad people, there would be no good lawyers."
—Charles Dickens, “The Old Curiosity Shop ... With a Frontispiece. From a Painting by Geo. Cattermole, Etc.” 255 (1848)
"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 property." —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 Amendment." —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, Let it Bleed (album, 1969)
"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]
“Children grow up thinking the adult world is ordered, rational, fit for purpose. It’s crap. Becoming a man is realising that it’s all rotten. Realising how to celebrate that rottenness, that’s freedom.” – John le Carré, The Night Manager (1993), line by Richard Roper
"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)
The book was dedicated in the first (1982) and sixth (2025) editions to Justin William Hall (1975-2025). He was three when this project started in 1978.