By JILL COLVIN and HOLLY RAMER (Associated Press) MANCHESTER, N.H. (AP) — Former New Jersey Gov. Chris Christie filed paperwork Tuesday formally launching his bid for the Republican nomination for president after casting himself as the only candidate willing to directly take on former President Donald Trump. Christie, who also ran for president in 2016, was set to announce his campaign later Tuesday at a town hall in the early voting state of New Hampshire.