The Story of Staples v. United States and the Innocent Machine Gun Owner: The Good, the Bad, and the Dangerous
Joseph Edward Kennedy
University of North Carolina
April 26, 2010
UNC Legal Studies Research Paper No. 1596222
Harold Staples claimed that he did not know that his rife was a machine gun. In Staples v. U.S., 511 U.S. 600 (1994), the Supreme Court held that the government had to prove such knowledge in order to convict him under the National Firearms Act. Staples’ story of a potentially innocent defendant prosecuted for things he did not know transformed how both federal and state courts interpreted criminal statutes with ambiguous mental state requirements. Staples established the proposition that courts should read knowledge requirements into statutes that criminalized conduct that would be otherwise innocent, particularly when serious punishment was at stake. At the heart of the Staples case, however, was a series of choices by the lawyers involved that shaped the case in ways not evident from the four corners of the Supreme Court’s opinions in the case. Ultimately the Staples decision was about character, and a fuller understanding of the Staples case helps us better understand the role that character plays in both the public welfare offense doctrine and in mens rea more generally: The lesson of the Staples case is that courts are most likely to raise mens rea requirements when statues clearly designed for the very bad may end up being successfully used against the possibly good.
Number of Pages in PDF File: 40working papers series
Date posted: April 26, 2010
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