May 20, 2007 - Bob Phelps, now serving his fourth term as mayor of Farmers Branch, used to be quite popular among the 28,000 residents of this Dallas suburb. But that was before the nation’s debate over illegal immigration hit home, literally, last week when a rock smashed into the window of his house. Traces of paint and new security cameras mark the spot where someone spray-painted the brickwork with “Viva los Mexicos” in large red letters. Hundreds of hate email messages have flooded the mayor’s inbox, and while Phelps says he can take it—“I’m a big boy”—his wife is...