with its unprecedented power, is there anything anyone can do about it? >> i wish i could tell you that we're going to be able to stop all interference. but that just wouldn't be realistic. >> "all in" starts right now. good evening from new york. i'm chris hayes. tonight, the infamous steel dossier is at the very center of the news on the russia investigation. nbc news reports that investigators on special counsel robert mueller's team have interviewed christopher steele. that's of course the former british intelligence officer who compiled that absolutely explosive document. the dossier deals an alleged effort by the russian government over a period of years, stretching back to 2013 or so, to cultivate and coopt donald trump and his inner circle, as well as an extensive conspiracy between the trump campaign and russian forces to work together to interfere in the 2016 presidential election on trump's behalf. the president denies those