Amends section 3661 of title 18 by inserting additional text before the period at the end of the section.

Amends section 3673 of title 18 by replacing the matter preceding paragraph (1) and adding a new subsection (b) that defines the term 'acquitted conduct' to include (1) acts for which a person was criminally charged and adjudicated not guilty after trial in a Federal, State, or Tribal court (or, for juveniles, found not responsible after a juvenile adjudication hearing), and (2) acts underlying a criminal charge or juvenile information dismissed on a motion for acquittal in Federal, State, or Tribal court.