Any offense described in subsection (a)(1) is punishable by a fine of not more than $100,000, or imprisonment for not more than 6 months, or both; except that if in the commission of any such offense the person uses a dangerous weapon, engages in conduct that causes bodily injury to any observer described in section 1857(1)(L) of this title or any officer authorized to enforce the provisions of this chapter (as provided for in section 1861 of this title), or places any such observer or officer in fear of imminent bodily injury, the offense is punishable by a fine of not more than $200,000, or imprisonment for not more than 10 years, or both. Any offense described in subsection (a)(2) is punishable by a fine of not more than $200,000.