SB 21 worked.  It put more oil in TAPS - which is precisely what it was supposed to do.  And it would have continued working but Walker, his democrat backers, the unions, Backbone and the Alaska Firsters all started chasing the producers out of state.  

Might be worth your while to review the Aesop fable about The Goose That Laid The Golden Eggs.  Kill the goose and the golden eggs stop.  Chase off the producers and the money stops.  Cheers -