Arizona prohibits CO2 regulations by state and regional programs:

Bill: HB 2442 (PDF)

Sponsored by Rep. Judy Burges, Sen. Frank Antenori, et al and signed into law by Gov. Jan Brewer, HB2442 prohibits an Arizona state agency from adopting or enforcing a state or regional program to regulate greenhouse gas emissions without express legislative authorization.

Burges states: “HB 2442, signed into law, limits the implementation of regional Environmental Protection Agency programs without going through the legislative process. HB 2442 was critical because implementation of a cap-and-trade program on carbon emissions could cost Arizona 124,000 jobs, $14.7 billion in lost revenues, and fuel and utilities increases of 27 percent and 50 percent, respectively. Arizonans cannot afford these costs.”

Also: “Arizona Rep. Judy Burges explains importance of HB 2442”