emails from hillary clinton. mr. barr is underplaying the knowledge that was in existence at that time of russian interference. >> but let me ask you this, this has been an ethical debate that i've engaged in with many people. and that is, if -- if we knew a foreign campaign was trying to infiltrate a campaign, does that campaign need to be warned? >> absolutely. and, in fact, the obama campaign back in 2008, along with the mccain campaign, were informed about efforts by the chinese and others to try to interfere and to do things that was going to affect the election. >> i believe the chinese, we think, got both the mccain and -- hacked into both the campaigns, if i'm not mistaken. >> well, yes, that's the responsibility of the fbi. so, i did have conversations with the fbi and jim comey and the white house about the need to inform the campaigns, and so, we would leave it to the fbi to take care of that type of