washington presumptive republican presidential nominee donald trump defend attack mexican-american judge friday resist pressure top republicans moderate tone concern hurt chance win white house trump bomb-throwing rhetoric help defeat 16 republican rival party nomination nov. election face tough fight expect democratic nominee hillary clinton many republicans want present discipline image feel confident method winner trump far wave advice republicans support want less loose talk cnn interview trump escalate attack u.s. district judge gonzalo curiel son mexican immigrants preside judge lawsuits involve fraud allegations trump university new york businessman defunct real estate train school trump suggest curiel mexican heritage influence judge opinion case trump campaign platform build wall along u.s. border mexico stop illegal immigration proud heritage trump say mexican build wall mexico answer give us unfair rule rule people even believe case end years ago summary judgment trump say judge week ago unseal document relate case comment two top elect u.s. republicans house representatives speaker paul ryan senate majority leader mitch mcconnell reflect continue worry among establishment republicans trump ryan endorse trump thursday say comment trump judge leave field clearly say things agree speak ... time time occur continue necessary hope ryan tell milwaukee radio station mcconnell speak msnbc raise concern trump criticism new mexico governor susana martinez rise star republican party appeal hispanic voters attack record last week trump thursday moderate tone say would like endorsement ought try unify ought try unify party behind mcconnell say trump us commit support try bring party together think need play role well trump receive 32 percent support latino voters nbc news/survey monkey poll week respectable number give critical comment throughout campaign illegal immigrants come mexico latin american countries specter trump nominee worry hispanic republicans week ruth guerra mexican-american resign republican national committee chief hispanic media relations source familiar departure say comfortable trump nominee broadly reince preibus chairman republican national committee try persuade trump moderate tone way heal fissure party time trump need rely deep-pocketed republican loyalists finance billion campaign need one thing one thing discipline say senior party official speak condition anonymity trump rally redding california indication candidate feel method work temperament important word trump say refer clinton charge temperamentally unfit white house need toughness tone need toughness temperament sting attack clinton thursday trump dredge scandals 1990s hit husband former president bill clinton say dishonest cite bill clinton affair former white house intern monica lewinsky first always get problems whitewater controversial real estate deal impeachment lie sex woman trump say lie people need folks another four years clintons trump defend attack mexican-american u.s. federal judge