Facing rising unemployment rates and having seen uncertain results from the stimulus bill, President Obama is hosting a "jobs summit" at the White House Thursday that will be packed with business leaders and economists supportive of White House policies but lacks a diversity of opinion, several analysts say. Missing from a partial list of attendees released by the White House are the self-proclaimed voices of business - the U.S. Chamber of Commerce and the National Federation of Independent Business - both of which have been critical of Mr. Obama's proposed health care overhaul. Confirmed attendees include liberal economists credited with...