Passenger Rail Crew Protection Parity Act This bill makes it unlawful for any person, while on a passenger train to: (1) assault or intimidate a crew member, and thereby interfere with the performance of the duties of a crew member or lessen the ability of a crew member to perform those duties; or (2) attempt or conspire to perform such an act. A violator is subject to a fine or a prison term of up to 20 years, or both, or life imprisonment if a dangerous weapon is used in assaulting or intimidating the crew member.