Desert Sun: As California Sen. Barbara Boxer says, it’s not the "Environmental Pollution Agency." It is the Environmental Protection Agency, but its officials are denying California the license to regulate its own greenhouse gas emissions, which would be more stringent than federal standards. Still, Boxer, a bipartisan coalition and Gov. Arnold Schwarzenegger – along with 15 other states – are pushing back and rightly so. California deserves a waiver to control its own tailpipe auto …