* Headlines for July 23, 2009 * Obama: Cambridge Police "Acted Stupidly" in Arrest of Harvard Scholar Henry Louis Gates * Promoting Health Care Reform, Obama Admits U.S. Can't Insure All Americans Without Single-Payer * Watchdog Group Sues for Disclosure of White House Meetings With Health Care Execs * Court Rules New York Fire Department Discriminates Against Black, Latino Applicants * "The Yes Men Fix the World": In New Film, Anti-Corporate Pranksters the Yes Men Continue to Jolt Polluters and Profiteers