Seriously, you can't see the comparison? Big Don's not the first person to make the comparison between the selling of indulgences and the selling of credits for carbon emissions.
http://spectator.org/archives/2009/07/15/granting-environmental-indulge
http://www.nickloper.com/2010/05/cap-and-trade-indulgences-for-the-21st-century/
http://real-economics.blogspot.com/2011/01/cap-and-trade-new-indulgences.html
Except that they're all wrong. The system is set up to generate solutions to the problem by creating a trade system. It's done so in the past for other pollutants, something that's conveniently forgotten in the argument.