Anthony Victor Echavarry appeals his convictions for possession of heroin and possession of marijuana. He argues that the trial court should have granted his motion to suppress heroin and marijuana found in the course of a search of his personal belongings as he was admitted to jail pursuant to arrest warrants for unrelated charges. The unrelated charges arose from a domestic incident involving Echavarry and his live-in girlfriend. Several police officers entered Echavarry’s house without a warrant, asked to speak with his girlfriend outside, and then obtained information from her. Based upon that information, the officers arrested Echavarry for domestic *180 violence charges. The officers then took Echavarry before a magistrate and obtained arrest warrants. Pursuant to the warrants, Echavarry was admitted to jail, which led to the discovery of the controlled substances at issue.
Echavarry assigns error to the trial court’s holding “that the entry [into the home] by [the police] was lawful,” reasoning that the entry resulted in his “illegal and unconstitutional arrest,” which in turn “led to the discovery of the contraband that [is] the basis of the charges on appeal.” According to Echavarry, the warrantless entry was unlawful because neither exigent circumstances nor any other exception to the warrant requirement of the Fourth Amendment existed at the time of the entry. 1 For the reasons set forth below, we affirm the judgment of the trial court denying the motion to suppress.
I. Background
“On appeal, ‘we review the evidence in the light most favorable to the Commonwealth, granting to it all reasonable inferences fairly deducible therefrom.’ ”
Archer v. Commonwealth,
Upon arrival, Beecherl observed clothes in bags thrown on the lawn and the steps leading to the house, as if they had been thrown out the front door. He knocked on the front door of the home, and Echavarry’s live-in girlfriend opened the door, holding a thirteen-month-old infant in her arm. At first, Beecherl testified that the girlfriend “let [him] in” the house. However, on cross-examination, Beecherl stated that he could not remember if he asked whether he could enter the house or whether the girlfriend said anything to him about entering the house. Rather, he could only testify that “she opened the door” and that in response he “stepped through the threshold.” 2 At that point, he initially asked the girlfriend about the disturbance, but she did not immediately respond to his inquiry, appearing hesitant “because she knew *182 who [Beecherl] was” since he had “been there for domestic situations in the past.” Once inside, Beecherl observed holes in the wall and Echavarry sitting on the couch in the living room. Another officer, Deputy Rawls, arrived approximately around the same time as Beecherl, and entered the home through the front door that was still open. Rawls went with the girlfriend into the kitchen to talk to her, while Beecherl stayed in the living room with Echavarry.
Shortly thereafter, Lt. Timothy Benjamin arrived at the house. Seeing both officers inside, Benjamin entered the house. In addition to the holes in the wall, he also observed a broken home telephone on the floor and things in disarray. He asked the girlfriend to accompany him outside, and she did so. While outside, the girlfriend told Benjamin that she and Echavarry had been arguing over financial matters and that Echavarry prevented her from leaving the house. She also told Benjamin that when she tried to make a phone call on her cell phone, Echavarry grabbed the phone away from her and struck her on her neck. Benjamin observed redness on her neck. Benjamin re-entered the house and asked Echavarry if he had his girlfriend’s cell phone, and Echavarry removed it from his pocket in response.
Benjamin then arrested Echavarry for assault and battery, abduction, and preventing someone from summoning law enforcement. Pursuant to his arrest, Benjamin searched Echavarry, but discovered nothing of consequence. After the search was complete, Benjamin allowed Echavarry to grab his wallet and house keys from a nightstand table, and had him place the items in his front sweater pocket.
After obtaining warrants for the three charges from the local magistrate, Benjamin took Echavarry to be processed at the local jail. As part of the standard booking procedure, Fauquier Deputy Sheriff John Thomas searched Echavarry and his personal belongings. Thomas discovered one small plastic bag of marijuana and a dime-sized bag containing heroin in Echavarry’s wallet. Echavarry was subsequently charged with felony possession of heroin in violation of Code *183 § 18.2-250 and misdemeanor possession of marijuana in violation of Code § 18.2-250.1.
Echavarry made a motion to suppress the admission of the controlled substances, arguing that their discovery would not have occurred but for an unlawful entry of his house, which led to his initial arrest. The trial court denied the motion, finding that exigent circumstances existed such that the police lawfully needed “to protect the people in the house.” This appeal followed.
II. Analysis
As he did at the trial court below, Echavarry argues on appeal that the police officers’ warrantless entry into his house was not justified by a valid exception to the warrant requirement and that the entry led to the eventual discovery of the controlled substances in his wallet when he was processed at the jail. In other words, Echavarry contends that the controlled substances discovered in his wallet at the jail were “fruit of the poisonous tree” of the prior entry into his house. Accordingly, Echavarry concludes that the trial court should have granted the motion to suppress the admission of those substances.
For the purposes of our analysis, we will assume without deciding that the police officers unlawfully entered Echavarry’s house. Nevertheless, we cannot conclude that the exclusionary rule should be applied in this case. The connection between the entry into the house and the ultimate discovery of the controlled substances is so attenuated as to dissipate any taint from the entry. 3 In light of the extremely attenuated connection between the entry into the house and *184 the discovery of the controlled substances at the jail, as well as other considerations, we do not believe that suppression would achieve an appreciable deterrent effect sufficient for its justification. Thus, we find no reversible error.
Although we defer to the trial court’s factual findings, we review the “application of the ‘fruit of the poisonous tree’ doctrine [to those facts]
de novo.” United States v. Lentz,
suppression of evidence [is] our last resort, not our first impulse. The exclusionary rule generates “substantial social costs,” which sometimes include setting the guilty free and the dangerous at large. [The United States Supreme Court has] therefore been “cautio[us] against expanding” it, and “[has] repeatedly emphasized that the rule’s ‘costly toll’ upon truth-seeking and law enforcement objectives presents a high obstacle for those urging [its] application.” [The Court has] rejected “[ijndiscriminate application” of the *185 rule, and [has] held it to be applicable only “where its remedial objectives are thought most efficaciously served,”—that is, “where its deterrence benefits outweigh its ‘substantial social costs.’ ”
Hudson,
Suppression of evidence can yield appreciable deterrence where the illegality engaged in by law enforcement results in the discovery of evidence that naturally flows from that illegality.
See, e.g., Wong Sun v. United States,
But-for causation is decidedly
not
the test used to determine whether evidence is tainted by an unconstitutional search or seizure such that suppression is an appropriate remedy.
Hudson,
In this case, the connection between the entry and the ultimate discovery of the contraband is simply too attenuated to justify exclusion. The breadth of that attenuation is readily apparent when we examine the causal chain espoused by Echavarry. Essentially, Echavarry argues that the contraband should have been excluded at trial because (1) but for the police officers’ entry into his house, the officers would not have spoken with the girlfriend outside; and (2) but for the officers speaking with the girlfriend, they would not have obtained probable cause to arrest Echavarry; and (3) but for Echavarry’s warrantless arrest, the officers would not have sought arrest warrants from the magistrate; and (4) but for the existence of warrants, Echavarry would not have been admitted to jail; and (5) but for being admitted to jail, Echavarry would not have been searched for contraband. Thus, to conclude that the discovery of the contraband was a fruit of the poisonous tree of purported police misconduct, we would have to rely upon a lengthy chain of but-for links. It is the very length of this chain that demonstrates the remoteness of the purported illegality from the ultimate discovery of the contraband. As Professor LaFave has emphasized,
“Where the chain between the challenged evidence and the primary illegality is long or the linkage can be shown only by ‘sophisticated argument,’ exclusion would seem inappropriate. In such a case it is highly unlikely that the police officers foresaw the challenged evidence as a probable product of their illegality; thus it could not have been a motivating force behind it. It follows that the threat of exclusion could not possibly operate as a deterrent in that situation.”
*187
Wayne R. LaFave,
Search and Seizure: A Treatise on the Fourth Amendment
§ 11.4(a) (quoting Comment,
Fruit of the Poisonous Tree: A Plea for Relevant Criteria,
115 U. Pa. L.Rev. 1136, 1148-49 (1967));
see also Ceccolini,
Additionally, to exclude the evidence at issue, we would also have to disregard the girlfriend’s
volitional
act to walk outside the house and speak with the officers about the domestic disturbance that had occurred. That discussion plainly supplied the officers with probable cause to arrest Echavarry, and there is nothing beyond mere but-for causation tying that conversation to the purportedly unlawful entry. The conversation with the girlfriend did not occur within the house, nor is there any evidence that the officers used their entry to ply details of the disturbance from the girlfriend. As the Supreme Court has previously reflected, “[witnesses can, and often do, come forward and offer evidence entirely of their own volition.”
Ceccolini,
*188
Finally, there is no suggestion here that the deputy at the jail who discovered the controlled substances in Echavarry’s wallet had knowledge of the events leading up to Echavarry’s arrest, or that his search of Echavarry was a direct result of the remote entry into the home. Indeed, the deputy’s search of Echavarry prior to his admission to the jail strikes us as “ ‘means
sufficiently distinguishable
[to purge] the primary taint’ ” of the entry into the house.
Segura,
III. Conclusion
In light of the foregoing reasons, we conclude that “the interest protected by the constitutional guarantee that has been [purportedly] violated would not be served by suppression of the evidence obtained.”
Hudson,
Affirmed.
Notes
. Echavarry further assigns error to the trial court, asserting that it "erroneously relied upon a materially incorrect interpretation of the observations of the officers when responding to a dispatcher’s request to go to [Echavarry's] home.” This assignment of error is without merit. The trial court noted that when the officers arrived outside the home, they observed "clothes strewn about on the steps and on the ground.” Echavarry alleges the use of the word "strewn” by the court was improper, as the officers testified that the clothing was actually in plastic bags in an orderly fashion. Echavarry has not accurately described the officers’ testimony. One of the officers testified that "there [were] bags of clothes in the front yard and on the steps leading into the home,” and "[i]t appeared that they were thrown outside.” The other officer confirmed this description. Accordingly, the trial court accurately described the officers' observations, and thus no error occurred.
. Although argued by the Commonwealth on appeal, we do not address whether the girlfriend consented to the entry into the house. The testimony from the officers was vague on this point. Moreover, because the Commonwealth did not rely on consent as a justification for the entry, the trial court made no factual findings on the issue. "The Fourth Amendment test for a valid consent to search is that the consent be voluntary, and 'voluntariness is a question of fact to be determined from all the circumstances.’ "
Ohio v. Robinette,
. Because the trial court ruled that the officer’s entry was justified under the exigent circumstances exception to the warrant requirement of the Fourth Amendment, it did not reach the issue of attenuation. However, because we review the issue of attenuation
de novo,
and because "the facts necessary to resolve the issue[ ] of [attenuation] were established in the record before the trial court,” we are not limited by the trial court's failure to address that issue.
See Perry v. Commonwealth,
. To be sure,
Ceccolini
held that testimony voluntarily supplied by a witness at trial should not be suppressed even though the witness’
*188
statements were to some degree causally related to a prior illegality.
Ceccolini,
. Neither the arrest warrant nor the officer’s affidavit upon which the warrant was based is part of the record before us. However, because judicial officers are presumed to know and follow the law,
Crest v. Commonwealth,
