Sacramento Bee: Valero Energy Corp. CEO Bill Klesse once jokingly suggested oil industry executives should fight global warming by holding their breath. Now, his company has emerged as a major force behind the November ballot measure to suspend California’s climate change law. Since its start as a small Texas gasoline maker more than 30 years ago, Valero has grown into the nation’s No. 1 independent oil refiner and a big player in Washington, D.C. The company also is spearheading the oil industry’s …