Transcript for Trump denies Cohen claim he knew about son's Russia meeting

to turn now to president long-time fixer and lawyer, Michael Cohen. ABC has lhat now Michael N says president trump did, in fact, kw about T trump tower meeting before th it before it had after dt Hillary clinto from a foreign this will rest rober Mueller why the way was otograph waiting the airport I D.C. On the left not away behind him there, you sonald trum standing in line tonight, Mueller's offictatement afthat photo, and here' ab cef juste correspondent,ierre Thomas. Reporter: Tonight president trump fierceenying the explose allegati F his for and fixer, Michael con. Multiple S Cohen claims trump knew in ncthat infam 2016 tru tower meeng. His son, Donald son-in-law jareder a aign chairnl siinwnith Russian lawyer with ties to the Kremlin. Trgh level and itive docunts that would incriminate Hillary Clinton as part of S supporr Mr. Trump. The president's son has said repeedly his father didn't learofhe meeting until well after the election. Did you tell your father anything about this? O. It was such a nothing. There was nog to tell. I mean, I wouldn't have even remembered it unt youta ring throu this stuff. It was literally just a wasted 20 minutes, which washame. R: The president a insis N the dark. Did you kw ime thatthey had the No, I didn't know anyth about the meeting. Very important -- a very, it must have been a very unimportant E I never enard about . Reporter: When news of the meetbroke, Jr. Released a misleading statement,implying was T Russian ads. Team trumpnitially id, the president had nothing to do with that either. The statement THAs used on sat used by Dold trump Jr., D I'm sure in consultation with his lawyers. The president wasn't involve at. Reporter: It was later revealed the presidentually dictated his son's misleading atement. E white house forced to track. E weighed , offered onike any far doday's allegations ma major escalatioin the standoff between the president and Cohen, L cod Ilways likemil, and he's a good person. Rorresident's new attorney once praised Cohen. He man is honest, honorable Repte? He'en lying a week or Een lying for ye there's nobody I know knows him that hasn't warned me if H back is up aga the wall, he'll lie like crazy because he's lied all he president ripped into his former fixer saying, "Sounds to me lik meone is tryin make up stories in order to get himself lated jam." Onrson knly watchinglay out, special C Robert Mueller, and for now, he IST the wor didch THA rare glimpse of him today sitting at a d.airpor ironicy fro dona trump Jr. A lot of people lng atto oner and on social M Pierre tma from washiton. Erre, sources say that michaelilling share history with the special unsel? Reporter: That's right, da Cohen is undnvestigati by federal prosecutors in New York, D sources tell likely torate withhim, and now he may be willing to Robert Mueller out that pho ath airport, was unaware Donald Trump Jr. Was er rre Thoma W us on a Friday night.

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