washington special counsel investigation link russia president trump 2016 election campaign continue without interference 2018 despite call trump administration ally republican lawmakers shut prominent republican senator say sunday lindsey graham serve senate arm force judiciary committees say department justice special counsel robert mueller need carry russia investigation without political interference investigation go forward investigation conduct without political influence graham say cbs face nation news program need let mr. mueller job think right guy right time question russia may interfere election trump campaign may link coordinate effort loom white house since trump take office january show sign recede trump prepare second year power despite intensify rhetoric trump ally recent weeks accuse mueller team bias republican president trump seem undercut supporters interview last week new york time say expect mueller go fair russia role election question possible link trump campaign focus multiple inquiries washington three committees senate house representatives investigate well mueller whose team may take early probe launch u.s. federal bureau investigation fbi several members trump campaign administration convict indict investigation trump ally deny collusion russia campaign kremlin deny meddle election graham say still want examination fbi use dossier link trump russia compile former british spy christopher steele prompt trump ally republicans question mueller inquiry saturday new york time report dossier trigger early fbi probe tip former trump campaign foreign policy adviser george papadopoulos australian diplomat russia damage information former trump rival hillary clinton want somebody look way department justice use dossier bother greatly way use want somebody look graham say say russia investigation must continue matter fact would hurt us ignore say senior u.s. republican senator 'let mr. mueller job