There are two parts to the Murray test. The 7th Circuit explicitly referenced both tests. The first test involves the independent source doctrine, applicable in Huskisson because the search warrant included unlawful conduct by law enforcement. The second test IS what the late great Justice Scalia focuses upon, which is to ask whether the reason/motivation to seek a search warrant was based on what was seen during an unlawful entry/search. This second factor can be characterized as an extension of the independent source doctrine in the first factor.
(Edited for length)
Except that's not what Justice Scalia said in the opinion, though... here is the relevant provision again... this time with my emphasis:
"The ultimate question, therefore, is whether the search pursuant to warrant was, in fact, a genuinely independent source of the information and tangible evidence at issue here.
This would not have been the case if the agents' decision to seek the warrant was prompted by what they had seen during the initial entry, or if information obtained during that entry was presented to the Magistrate and affected his decision to issue the warrant."
First, there is the strand of Detective Kinney's contradictory testimony that the decision to seek the warrant was prompted by what they had seen during the initial entry. But even if you take that as a simple mis-statement, there is the second part - the information obtained during the entry was present to the Magistrate. How are we to assess whether that information affected his decision to issue the warrant? Well, for guidance on that, I'll refer to Chief Justice Burger's opinion in
Segura v. US, 468 US 796, 814-15 (1984) (Note my added emphasis on the word "wholly" - it doesn't leave much room for ambiguity):
"None of the information on which the warrant was secured was derived from or related in any way to the initial entry into petitioners' apartment; the information came from sources
wholly unconnected with the entry, and was known to the agents well before the initial entry. No information obtained during the initial entry or occupation of the apartment was needed or used by the agents to secure the warrant. It is therefore beyond dispute that the information possessed by the agents before they entered the apartment constituted an independent source for the discovery and seizure of the evidence now challenged. This evidence was discovered the day following the entry, during the search conducted under a valid warrant; it was the product of that search,
wholly unrelated to the prior entry. The valid warrant search was a "means sufficiently distinguishable" to purge the evidence of any "taint" arising from the entry. Wong Sun, 371 U.S. at 371 U. S. 488. Had police never entered the apartment, but instead conducted a perimeter stakeout to prevent anyone from entering the apartment and destroying evidence, the contraband now challenged would have been discovered and seized precisely as it was here. The legality of the initial entry is, thus, wholly irrelevant under Wong Sun, supra, and Silverthorne Lumber Co. v. United States, 251 U. S. 385 (1920)."
It seems pretty clear to me that for the independent source doctrine to apply here, the caselaw is clear - the probable cause underlying the warrant must be "wholly unrelated" to the illegal entry. Once the illegally obtained evidence was cited in making the application, then the Magistrate's issuance of the warrant itself became tainted by the fruit from the poisonous tree doctrine. There's no room for ambiguity here - "wholly unrelated" is a pretty black-and-white standard, wouldn't you agree?