Image: Climate Progress This post first appeared at the Center for American Progress. This November, California voters are in danger of undoing one of the most progressive pieces of environmental legislation ever passed. Texas oil companies have taken advantage of California's quirky initiative system to place Proposition 23 on the ballot. This proposition has one purpose: to undo California's Global Warming Solutions Act (also known as Assembly Bill 32 or AB 32), which stands as a landmark piece of bipartisan clean energy legislation and is a model for federal action. AB 32 has catalyzed billions of dollars in private sector …