DES MOINES, Iowa (AP) -- Former U.S. Sen. Bill Bradley, who lost the Democratic nomination for president to Al Gore in 2000, is expected to endorse front-runner Howard Dean, party officials said Monday. The officials, speaking on condition of anonymity, said Dean and Bradley planned to announce the endorsement this week. Dean has changed his campaign schedule to appear Tuesday in New Hampshire for a surprise announcement, state campaign director Karen Hicks said Monday. Campaigning in Iowa, Dean said he could neither confirm nor deny the report. Bradley gave Gore a scare early in the 2000 primary process but eventually...