Proposition 23 on the November ballot would suspend Governor Schwarzenegger's proudest achievement, AB 32. The law that sets limits on emissions of greenhouse gases would not go back into effect until unemployment stayed at 5.5% for four consecutive quarters. The Prop 23 campaign is funded mostly by out-of-state energy companies. It's supported by the business-oriented base of California's Republican Party but, in a blue state where Independents will make the difference, Republican candidates are having trouble. The campaign against it is getting money from Silicon Valley and other centers of the so-called "green economy." The law school at UC Berkeley issued a study today called California at the Crossroads: Proposition 23, AB 32 and Climate Change.