NEW ORLEANS (AP) — With the first anniversary of Hurricane Katrina behind him and the task of rebuilding New Orleans' shattered economy just beginning, Mayor Ray Nagin will lead a two-day pitch to New York's investment community designed to bring much-needed business to the storm-devastated city. The delegation of business and public sector leaders will spend Friday and Saturday at a theater in lower west side Manhattan, touting city and federal tax breaks for investment, encouraging filmmakers to return to the city and seeking commercial sponsors for next year's Mardi Gras, an idea that didn't take off in 2006 as...