The constutionalists forget to explain to people that while the US constitution is the framework, the ACTUAL laws of the land are the U.S.C. United States Codes.

and the specific part of that code which covers personal income taxes is

USC
TITLE 26 > Subtitle A > CHAPTER 1 > Subchapter A > PART I .


when Snipes is tried, the actual law(s) he violated will be spelled out...and if convicted, he may be required to pay the "fine" and do the "imprisonment" as defined by the code.