The ethnic studies professor filed a complaint in July saying his First Amendment rights were violated when he was fired for research misconduct. He is seeking reinstatement. The University of Colorado filed motions Tuesday asking a Denver district judge to dismiss former CU professor Ward Churchill's lawsuit against the school. Churchill, who taught ethnic studies, filed a complaint in July, charging that the regents and the school violated his First Amendment rights to free speech and denied him due process in his termination. School officials responded Tuesday, saying the regents have immunity from a lawsuit over their decision to fire...