In these consolidated appeals, Patricia K. Langer and Henry J. Langer appeal the district court’s 1 orders enforcing In *760 ternal Revenue Service (IRS) summonses. Having carefully reviewed the record, we conclude that the district court did not clearly err in enforcing the summonses. See United States v. Powell, 379 U.S. 48, 57-58, 85 S.Ct. 248, 13 L.Ed.2d 112 (1964) (enforcement of IRS summons is appropriate where record establishes that (1) there is legitimate purpose for investigation, (2) inquiry might be relevant to purpose, (3) IRS does not already have information sought, and (4) requisite administrative steps have been followed); United States v. Norwood, 420 F.3d 888, 892 (8th Cir. 2005) (prima facie case for enforcement of summons may be established by minimal showing of good faith compliance with requirements for summons and can be demonstrated by IRS agent’s affidavit); United States v. Kaiser, 397 F.3d 641, 643 (8th Cir. 2005) (reviewing for clear error enforcement of IRS summons). The various assertions the Langers raise on appeal provide no basis for reversal.

Accordingly, we affirm. See 8th Cir. 47B. We also grant appellee’s motion to quash the new exhibits the Langers have submitted with their reply brief.