SACRAMENTO -- Latino lawmakers like Kern County's Assemblywoman Nicole Parra and Sen. Dean Florez seldom find themselves in a tougher political spot than they are in right now. That's one result of Gov. Arnold Schwarzenegger's demand that the Legislature repeal the new law allowing illegal immigrants to obtain driver licenses -- or face the threat of a referendum on the ballot next March. "It's a tough decision for a lot of us," said Florez, D-Shafter. It is especially tough for Parra. She is a Democrat running for re-election in a west-side district with a large Latino population, but with a...