Well, now that I know you're referring to railroads ["UP" must refer to Union Pacifc...I have no clue what the other initials stand for], I would tend to agree since the RLA (Railway Labor Act) [not the "FRA" as you call it] does not include a provision akin to Section 14(b) of the Taft-Hartley Act, which applies to vast majority of private industries. Without my handy-dandy Cracker Jack decoding device, your statement made a general reference to any CBA with a closed shop provision in Arizona.
