The case of Cheek v. United States involves a U.S. Supreme Court decision on tax-protester arguments. The Cheek case involved John L. Cheek, a tax protester who was prosecuted for tax evasion under 26 U.S.C. § 7201. In Cheek, the Court stated:
Claims that some of the provisions of the tax code are unconstitutional are submissions of a different order. They do not arise from innocent mistakes caused by the complexity of the Internal Revenue Code. Rather, they reveal full knowledge of the provisions at issue and a studied conclusion, however wrong, that those provisions are invalid and unenforceable. Thus, in this case, Cheek paid his taxes for years, but after attending various seminars and based on his own study, he concluded that the income tax laws could not constitutionally require him to pay a tax.
The Supreme Court in Cheek continued:
We do not believe that Congress contemplated that such a taxpayer, without risking criminal prosecution, could ignore the duties imposed upon him by the Internal Revenue Code and refuse to utilize the mechanisms provided by Congress to present his claims of invalidity to the courts and to abide by their decisions. There is no doubt that Cheek, from year to year, was free to pay the tax that the law purported to require, file for a refund and, if denied, present his claims of invalidity, constitutional or otherwise, to the courts. See 26 U.S.C. 7422. Also, without paying the tax, he could have challenged claims of tax deficiencies in the Tax Court, 6213, with the right to appeal to a higher court if unsuccessful. 7482(a)(1). Cheek took neither course in some years, and, when he did, was unwilling to accept the outcome. As we see it, he is in no position to claim that his good-faith belief about the validity of the Internal Revenue Code negates willfulness or provides a defense to criminal prosecution under 7201 and 7203. Of course, Cheek was free in this very case to present his claims of invalidity and have them adjudicated, but, like defendants in criminal cases in other contexts who “willfully” refuse to comply with the duties placed upon them by the law, he must take the risk of being wrong.
After a remand by the Supreme Court, the tax protester in Cheek was ultimately convicted, and the conviction was upheld on appeal. The Supreme Court refused to hear his petition for review of his conviction after the remand, and he was sent to prison.