From the July 3 SanFran Chronicle
"Democratic state lawmakers are questioning Gov. Arnold Schwarzenegger's commitment to fight global warming after the governor's top deputies thwarted an attempt by the state's air quality regulators to enact their own measure to reduce greenhouse gas emissions.
The executive director of the California Air Resources Board, Catherine Witherspoon, resigned Monday -- three days after Schwarzenegger fired the board's chairman, Robert Sawyer, who had said he wanted to be more aggressive in curbing pollution that causes global warming than does the Republican governor, who signed the state's landmark bill last year.
Sawyer, a 72-year-old engineer, made public on Monday a transcript of a voice mail, left on his phone by one of Schwarzenegger's aides before the air board's meeting last month, urging the chairman to adopt only the three rules acceptable to the governor. "
more from the SF Chronicle here
L.A. Times coverage here and here