WASHINGTON - Barack Obama's presidential campaign wants federal regulators to investigate fellow Democrats who are backing Hillary Rodham Clinton's candidacy, taking intraparty discord to a new level of confrontation. Obama's campaign lawyer, Robert Bauer, filed a complaint Wednesday with the Federal Election Commission, accusing the pro-Clinton American Leadership Project of violating campaign finance laws by running ads against Obama. The group is largely financed by the American Federation of State, County and Municipal Employees and is run by Democratic operatives, many of them based in California and who have past connections to Clinton or her husband. Its organizers say they...