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213031P.pdf   08/23/2022  United States  v.  Christopher Hay
   U.S. Court of Appeals Case No:  21-3031
   U.S. District Court for the Southern District of Iowa - Eastern   
[PUBLISHED] [Kelly, Author, with Smith, Chief Judge, and Benton, Circuit Judge] Criminal case - Criminal law. The affidavit provided in support of the search application for defendant's home relied, in part on a confidential ATF Bulletin which defined fuel filter firearm silencers, and that Bulletin, rather than attempting to change 18 U.S.C. Sec. 921(a)(24), merely informed law enforcement of items that qualified as firearm silencers under the law as it already exists; even if the affidavit failed to establish probable cause to believe evidence of the offense would be found at defendant's residence, the officers were not entirely unreasonable in their belief that the warrant was supported by probable cause and the Leon good faith exception applied.