18 U.S.C. § 2332a : US Code - Section 2332A: Use of weapons of mass destruction

      (a) Offense Against a National of the United States or Within the
    United States. - A person who, without lawful authority, uses,
    threatens, or attempts or conspires to use, a weapon of mass
    destruction - 
        (1) against a national of the United States while such national
      is outside of the United States;
        (2) against any person or property within the United States,
      and
          (A) the mail or any facility of interstate or foreign
        commerce is used in furtherance of the offense;
          (B) such property is used in interstate or foreign commerce
        or in an activity that affects interstate or foreign commerce;
          (C) any perpetrator travels in or causes another to travel in
        interstate or foreign commerce in furtherance of the offense;
        or
          (D) the offense, or the results of the offense, affect
        interstate or foreign commerce, or, in the case of a threat,
        attempt, or conspiracy, would have affected interstate or
        foreign commerce;

        (3) against any property that is owned, leased or used by the
      United States or by any department or agency of the United
      States, whether the property is within or outside of the United
      States; or
        (4) against any property within the United States that is
      owned, leased, or used by a foreign government,

    shall be imprisoned for any term of years or for life, and if death
    results, shall be punished by death or imprisoned for any term of
    years or for life.
      (b) Offense by National of the United States Outside of the
    United States. - Any national of the United States who, without
    lawful authority, uses, or threatens, attempts, or conspires to
    use, a weapon of mass destruction outside of the United States
    shall be imprisoned for any term of years or for life, and if death
    results, shall be punished by death, or by imprisonment for any
    term of years or for life.
      (c) Definitions. - For purposes of this section - 
        (1) the term "national of the United States" has the meaning
      given in section 101(a)(22) of the Immigration and Nationality
      Act (8 U.S.C. 1101(a)(22));
        (2) the term "weapon of mass destruction" means - 
          (A) any destructive device as defined in section 921 of this
        title;
          (B) any weapon that is designed or intended to cause death or
        serious bodily injury through the release, dissemination, or
        impact of toxic or poisonous chemicals, or their precursors;
          (C) any weapon involving a biological agent, toxin, or vector
        (as those terms are defined in section 178 of this title); or
          (D) any weapon that is designed to release radiation or
        radioactivity at a level dangerous to human life; and

        (3) the term "property" includes all real and personal
      property.