The California Chamber of Commerce filed suit against the California Air Resources Board (CARB) in a last minute effort to thwart the state's greenhouse gas auction. The Chamber says that the auction is essentially an “unconstitutional tax” on businesses that are impacted by AB32, the state’s global warming law. The Chamber says in their suit that AB32 “does not expressly authorize ARB to impose any fees/taxes other than a minor administrative fee.” They believe that if the state legislature wants to give CARB the power to enact such a tax they can do so through passing new legislation. The carbon emission credits auction will take place today.