Rep. Pete Stark, 80, has seven children; three are minors, the product of his third marriage. He once told the Los Angeles Times that he calls the three youngest his "second litter." Lucky Stark. Thanks to a dated Social Security system, he enjoys a "second-litter" subsidy. As Carolyn Lochhead wrote in The Chronicle, Stark has reported a net worth as high as $27 million, and he earns $174,000 as a member of Congress. Nonetheless, Stark's three minor children are collecting benefits from Social Security. The Social Security Administration estimates that 4.4 million kids, mostly children of deceased or disabled parents,...