washington president donald trump intend trade away u.s. job china help north korea u.s. commerce secretary wilbur ross say monday add constructive talk beijing underway trade issue interview cnbc ross row back trump comment cbs interview saturday china help north korea trump trade ask need china help contain threats north korea make difficult tough beijing trade issue ross say think constructive discussions trade chinese parallel discussions north korea ross tell cnbc think president try say try overall constructive relationship china variety topics press directly involve human live north korea situation think mean indicate intend trade away american job help north korea ross say ross also reaffirm administration intend renegotiate north american free trade agreement withdraw call nafta ancient treaty nothing address digital economy little address service many obsolete provision rule origin allow many components products outside unite state canada mexico say however mexico july 2018 national elections could become obstacle negotiations complete well close get election difficult get anything ross say ask white house national trade council director peter navarro role trade policy ross say trade negotiator work u.s. trade representative commerce department kind triumvirate trade ross add navarro spend lot time buy american hire american initiatives part focus u.s. trade deficits trump create role navarro serve principal economic advisor 2016 election campaign trump wo n't trade u.s. job china 's help north korea ross