Murphy M. Hubbard appeals the district court’s 1 denial of his petition to quash an Internal Revenue Service (IRS) summons. Having carefully reviewed the record and considered Hubbard’s arguments, we conclude that the district court did not clearly err in denying the petition. See United States v. Kaiser, 397 F.3d 641, 643 (8th Cir. 2005). We reject Hubbard’s due process argument and note that the district court in fact considered his untimely reply to the IRS’s show-cause response. We decline to consider additional claims that Hubbard asserts for the first time on appeal. See Stone v. Harry, 364 F.3d 912, 914 (8th Cir. 2004).

Accordingly, we affirm. See 8th Cir. R. 47B.