CNN/U.S. President Jon Klein told staffers of "Lou Dobbs Tonight" the controversy over President Barack Obama's birth certificate is a "dead story." Klein wrote in an e-mail to staffers Thursday that CNN researchers had determined Hawaiian officials discarded paper birth documents in 2001. Thus, he said, Obama's long-form birth certificate no longer exists, and a shorter certificate that is public is the official record. "It seems to definitively answer the question," Klein wrote in the e-mail, first reported by the Web site TVNewser. "Since the show's mission is for Lou to be the explainer and enlightener, he should be sure...