United States CodeMore at the top link.TITLE 18
PART I
CHAPTER 17
331. Mutilation, diminution, and falsification of coins?Whoever fraudulently alters, defaces, mutilates, impairs, diminishes, falsifies, scales, or lightens any of the coins coined at the mints of the United States, or any foreign coins which are by law made current or are in actual use or circulation as money within the United States; or whoever fraudulently possesses, passes, utters, publishes, or sells, or attempts to pass, utter, publish, or sell, or brings into the United States, any such coin, knowing the same to be altered, defaced, mutilated, impaired, diminished, falsified, scaled, or lightened? Shall be fined under this title or imprisoned not more than five years, or both.
-PJ
Does this include the nut who stamped JFK in profile on pennies, or kids who smash coins on RR Tracks?