18 U.S.C. § 10
Section 10 · Interstate commerce and foreign commerce defined
Amended 1 time on record
Applied in 91 court decisions — leading case Dennis v. United States (1951)
Most recently applied in United States v. Darrah (March 2025)
How often courts cite this section
Court decisions citing this, by year.Markers show enactment, consequential amendments, and circuit splits over this section — watch for a citation surge after a change or a disagreement. The dip in the last several years is a data-coverage gap, not a real trend — our corpus holds fewer opinions from the most recent years, so recent citations are undercounted.
In any prosecution in which the United States must establish that material relates to the national defense or constitutes classified information, the United States shall notify the defendant, within the time before trial specified by the court, of the portions of the material that it reasonably expects to rely upon to establish the national defense or classified information element of the offense.