The Washington Sate chapter of the Sierra Club has joined the oil and mining industry in opposing voter initiative 732. In case you haven’t heard of this measure, it would implement a revenue-neutral carbon tax. Dr. James Hansen proposed such a scheme back in 2009 whereby revenues from the carbon tax are returned to families and individuals (in this case through a lower sales tax).
If you are wondering why on earth they would oppose, you can try to read their reasons here and here. I’ve tried to make sense of it, but their reasoning is contradictory and incomprehensible. This is really a new low for the Sierra Club.