
    Frances M. SCOTT; Galen L. Amerson, Petitioners-Appellants, v. COMMISSIONER OF INTERNAL REVENUE, Respondent-Appellee.
    No. 17-9001
    United States Court of Appeals, Tenth Circuit.
    Filed August 28, 2017
    Frances Moorer Scott, Pro Se
    Galen Lemar Amerson, Pro Se
    Bruce R. Ellison, U.S. Department of Justice, Tax Division, Appellate Section, Washington, DC, Geoffrey Klimas, U.S. Department of Justice, Appellate Staff, Civil Division, Washington, DC, for Respondent-Appellee
    Before BRISCOE, O’BRIEN, and BACHARACH, Circuit Judges.
   ORDER AND JUDGMENT

Terrence L. O’Brien, Circuit Judge

The Commissioner of Internal Revenue sent a notice of deficiency to Appellants Frances M. Scott and Galen L. Amerson (collectively, “the taxpayers”), advising them of an income tax deficiency of $36,517 for the 2011, 2012, and 2013 tax years. The taxpayers petitioned the Tax Court for. a redetermination of the deficiency. They did not allege any calculation errors, but instead proffered a series of typical tax-defier arguments questioning the essence of our country’s tax system. Despite multiple notices and reminders, the taxpayers did not appear at trial. Ultimately, the Tax Court dismissed the petition under Tax Court Rule 123(b) for Mck of prosecution, ruled against the taxpayers on the deficiency issue, and imposed a $6,000 penalty. The taxpayers now appeal. Exercising jurisdiction under 26 U.S.C. § 7482(a)(1), we affirm.

The Tax Court thoroughly and accurately recounted the procedural history of this case in its orders dated October 21, 2016, November 3,2016, December 22, 2016, and January 5, 2017. See Aplee. Br., Attach. A at 13-15, 16-21, 23-27 & 28-30. As this history shows, the Tax Court was exceedingly patient with the taxpayers despite their failure to appear at trial or comply with a show cause order to explain their absence, their insistence on reiterating arguments rejected by the Tax Court as frivolous, and repeated missed deadlines. In addition, the Tax Court carefully detailed the basis for its dismissal.

This court will not reverse a dismissal for failure to prosecute absent an abuse of discretion. Ducommun v. Comm’r, 732 F.2d 752, 754 (10th Cir. 1983). We have no difficulty concluding the Tax Court did not abuse its discretion. Nor do we have anything to add to its well-reasoned orders. We have already denounced similar tax-defier arguments as “completely lacking in legal merit and patently frivolous.” See Lonsdale v. United States, 919 F.2d 1440, 1448 (10th Cir. 1990); accord Casper v. Comm’r, 805 F.2d 902, 904-05 (10th Cir. 1986), overruled on other grounds by Wheeler v. Comm’r, 521 F.3d 1289 (10th Cir. 2008); Charczuk v. Comm’r, 771 F.2d 471, 472-74 (10th Cir. 1985). And the taxpayers have not even attempted to contest the Tax Court’s authority to dismiss their lawsuit or penalize them for their conduct. Accordingly, we affirm the Tax Court’s decision.

The taxpayers’ request for leave to file a supplement to their brief dated June 15, 2017, is granted, and the court has considered the new material presented therein. 
      
       After examining the briefs and appellate record, this panel has determined unanimously that oral argument would not materially assist in the determination of this appeal. See Fed. R. App. P. 34(a)(2); 10th Cir. R. 34.1(G). The case is therefore ordered submitted without oral argument. This order and judgment is not binding precedent, except under the doctrines of law of the case, res judicata, and collateral estoppel. It may be cited, however, for its persuasive value consistent with Fed. R. App. P. 32.1 and 10th Cir. R. 32.1.
     