new york meg whitman head technology firm hewlett packard enterprise co hpe.n say sunday donald trump unfit u.s. presidency criticize new jersey governor chris christie whose fail presidential bid support endorse late day trump pick another high-profile endorsement u.s. senator jeff sessions alabama lead conservative trump insurgent campaign rive republican party party leaders openly discuss thwart tens thousands members vote trump help comfortably win three four state far hold nominate contest party leaders nervous trump billionaire real-estate developer new york city deviate central tenets republican conservatism may alienate voters candidate nov. general election propose ban muslims enter unite state decline journalist invitation sunday condemn ku klux klan violent white-supremacist group christie scrap presidential bid early month become prominent republican figure break rank party leadership endorse trump friday ahead week super tuesday contest voters 11 state go poll whitman co-chairwoman national finance committee christie campaign say statement reporters trump would take country dangerous journey christie aware chris christie endorsement donald trump astonish display political opportunism donald trump unfit president say statement whitman chief executive president hewlett packard enterprise chairman hp inc hpq.n call christie donors follow trump predominantly fund campaign personal loan representatives christie trump respond request comment early sunday trump ask repeatedly would unequivocally condemn klan support white supremacists know anything even talk white supremacy white supremacists trump tell cnn jake tapper ask endorsement david duke former klan leader would send list group research certainly would disavow think something wrong previously trump seem less uncertain view duke david duke endorse say response reporter alright disavow ok late backer senator sessions defend controversial comment klan past 1986 admit unsuccessful confirmation hear become federal judge say think klan ok come believe members smoke marijuana explain remark joke since call klan destestable separate interview sunday trump also defend post twitter account quote sometimes attribute italian fascist leader benito mussolini tell nbc news realize quote good live one day lion 100 years sheep associate mussolini say matter good aphorism many party leaders hope u.s. senator marco rubio florida somehow overtake trump party nominate convention july despite rubio state lag behind trump opinion poll recent days rubio take adopt trump habit use adolescent insult denigrate rival suggest friday trump urinate trousers last week televise debate rubio u.s. senator ted cruz texas republican yet beat trump primary election criticize trump reticence speak ill klan sunday party nominate someone refuse condemn white supremacists ku klux klan rubio tell crowd voters purcellville virginia msnbc report additional report alana wise washington edit jonathan oatis article fund part sap independently create reuters editorial staff sap editorial involvement creation production tech ceo whitman call trump 'unfit u.s. president