Does the Railway Labor Act preempt, preclude or otherwise limit claims under anti-discrimination statutes?

QUESTION PRESENTED Does the Railway Labor Act preempt, preclude or otherwise limit, and if so when and in what way, claims under anti-discrimination statutes, such as Title VII? ii PARTIES The plaintiff is Dawn C. Polk. The defendants are the Amtrak National Railroad Passenger Corporation, Andrew Collins, Alton Lamontagne, Curtis Stencil, and Tracey Armstrong.