A Southern California fence-building company and two executives pleaded guilty in federal court Thursday to knowingly hiring illegal immigrants and agreed to pay a combined penalty of $5 million, marking a rare victory for the federal government in prosecuting employers for immigration crimes. Golden State Fence Co. pleaded guilty to the charge as a misdemeanor and agreed to pay $4.7 million to the federal government. It admitted hiring illegal workers between January 1999 and November 2005. Mel Kay, 64, the company's founder, chairman and president, and Michael McLaughlin, 42, manager of the company's Oceanside office, pleaded guilty to the charge...