Don't want to start an argument because this has been beaten to death elsewhere, but until you can prove beyond a shadow of a doubt that the fish did not voluntarily take the offering (i.e. bead, corkie, etc.) then the method remains legal. Most are likely flossed as you assert, but there is a small percentage that hit the offering willingly. That being the case, you can't call it illegal. Not arguing one side or the other - just pointing out why the method remains legal in CA along with OR and WA.
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