washington republican chairman u.s. senate intelligence committee wednesday promise thorough investigation direct link russia republican donald trump successful 2016 run white house committee chairman richard burr mark warner top democrat pledge joint news conference would work together contrast partisan discord roil similar probe house representatives intelligence committee burr ask senate panel want determine anything suggest direct link trump respond know challenge answer question american people trump young presidency cloud allegations u.s. intelligence agencies russia seek help win connections campaign personnel russia also scrutiny trump dismiss assertions russia deny allegations senate committee intend begin interview many 20 people include jar kushner trump son-in-law one close advisers begin early monday burr serve security adviser trump campaign say coordinate scope committee investigation insist could remain objective burr decline go along white house denial collusion campaign russian hackers u.s. intelligence officials believe favor trump last year campaign expense democratic challenger hillary clinton would crazy try draw conclusions investigation burr say let us go little deep ask us write conclusions clearly something intend road burr warner would comment investigation house chairman intelligence committee trump ally devin nunes fire handle matter many democrats include adam schiff top democrat house intelligence panel call nunes recuse investigation meet last week unidentified source white house complex accuse collude white house tell committee colleagues nunes meet house speaker paul ryan trump tell reporters source provide evidence information trump transition team collect legal surveillance target republican democratic lawmakers say discord surround house committee make senate investigation important ever clearly senate appear democrats republicans act like adults take matter seriously democratic representative jim mcgovern tell reuters warner burr stress importance expose activity russian hackers warner say include report upwards 1,000 pay internet troll spread false negative stories clinton warner burr disagree slightly warner allude difficulties get particular document intelligence agencies burr defend two senators also indicate communicate michael flynn trump former national security adviser fire last month misrepresent meet russian ambassador would safe say conversations lot people would safe say general flynn part list burr say neither burr warner give timeline finish investigation one big investigations hill see time say burr congress since 1995. senators say also want call attention describe russia attempt influence upcoming elections france germany senate intelligence leaders pledge bipartisan trump-russia inquiry