Eighth Circuit and a pair of nonprece-dential decisions from this court, all of which assume that lying to a supervising probation officer is a violation of 18 U.S.C. § 1001(a), a felony. See United States v. Wagner, 573 Fed.Appx. 598, 598-99 (7th Cir. 2014); United States v. Quillman, 409 Fed.Appx. 18, 21 (7th Cir. 2011); United States v. Grimes, 54 F.3d 489, 491-92 (8th Cir. 1995). But Grimes was decided before Congress amended § 1001 to exempt from its coverage any false statement made to a “judge or magistrate” by a party in a “judicial proceeding,” 18 U.S.C. § 1001(b), and we haven’t yet considered whether, or to what extent, that exemption covers lies made to a probation officer by a person under supervision, compare United States v. Horvath, 492 F.3d 1075, 1076 (9th Cir. 2007) (<HOLDING>), with United States v. Vreeland, 684 F.3d 653,
holding that probation is not a sentence holding that defendants lies to probation officer preparing presentence report fall within  1001b exception if probation officer must include particular statement in report holding defendants statement that presentence report was correct did not constitute admission to the nature and cireumstances of the crime reflected in the report holding that if the government fails to object to the presentence report the district courts reliance on the report is reviewed for plain error holding that the defendants statements to the probation officer were insufficient to satisfy the safety valves fifth requirement the probation officer is for purposes of  5c12 not the government