washington u.s. republican presidential nominee donald trump ratchet tensions party tuesday deny two lead figure house representatives speaker paul ryan senator john mccain support re-election bid trump tell washington post interview could endorse neither ryan top u.s. elect republican mccain u.s. senator arizona former republican presidential nominee face challenge state primary contest ahead nov. general election ryan mccain criticize trump feud family army captain humayun khan die line duty iraq 2004 award bronze star medal bravery death discord come two weeks republican national convention cleveland formally nominate trump president late rift party already fray internal dissent standard bearer see stark relief convention mccain among high-level party members essentially snub trump choose attend mitt romney 2012 republican nominee former presidents george h.w bush george w. bush also attend convention trump run dispute khizr ghazala khan since take stage last week democratic convention cite son sacrifice criticize trump propose ban muslims enter unite state uproar lead many republicans distance trump voice support khan family trump mirror language ryan use support nominee eventual endorsement tell newspaper quite yet endorse ryan next tuesday wisconsin primary never mccain ballot primary elections arizona late month mccain friendly meet trump vice presidential run mate mike pence tuesday arizona pence visit mccain spokeswoman say trump say ryan seek endorsement give serious consideration ryan campaign office quickly respond neither speaker ryan anyone team ever ask donald trump endorsement confident victory next week regardless campaign spokesman zack roday say statement ryan favor win primary challenger paul nehlen trump praise run good campaign mid-july survey harper poll ryan ahead nehlen nearly 50 point trump former reality tv star trouble many republican establishment off-the-cuff often insult style controversial policies include propose ban muslims plan build wall along mexican border keep illegal immigrants president barack obama tuesday blast trump unfit president question republican would support new york businessman seek first public office question think ask repeatedly say strong term say unacceptable still endorse obama democrat say white house news conference singapore prime minister lee hsien loong chorus complaints trump grow tuesday representative richard hanna new york become first republican congress endorse democratic nominee hillary although several republicans congress say support trump hanna retire house representatives rather seek re-election say decision prompt trump attack khan family call trump deeply flaw endless ways unrepentant self-involved new jersey governor chris christie trump ally view trump potential run mate call criticisms khan family inappropriate trump son eric tell cbs news tuesday father comment khans blow hugely proportion trump fall behind clinton opinion poll make public since party hold nominate conventions last month clinton extend lead trump percentage point accord reuters/ipsos poll release tuesday point friday 43 percent likely voters favor clinton 35 percent favor trump percent pick other trump also trail clinton fundraise clinton report raise nearly 90 million july campaign democratic party half donations come new donors interview fox business television network trump brush billionaire investor warren buffett blister critique business acumen buffett chairman chief executive officer berkshire hathaway inc scorn trump 1995 move list trump hotels casino resort new york stock exchange say business lose money next decade monkey would outperform trump company trump say business success qualify lead country defend record run hotel casino business atlantic city new jersey great time get seven years tell network tuesday take lot money atlantic city suppose businessperson republican rift widen trump decline endorse ryan mccain