I think if NMFS water to list WB Chinook I would make them prove that wild native Chinook were there in anything more than marginal numbers. We know that Columbia fish dip in so catch data without supporting genetic information could be of no use.

Plus, "real" Chinook were large. A century of management had shrunk them, which makes them more amenable to smaller streams. It is possible that a century of making Chinook smaller has created a fish for WB.