All this comes as Cohen, a man who once said he would take a bullet for the president, has signaled an increasing willingness to cooperate with the special counsel. "I think he's going to tell the truth, as best he can, given his recollection".
"This is the most corrupt investigation I have ever seen, that the Justice Department is allowing to go forward", Giuliani said. "As long as he tells the truth, we're home free", said Rudy to George Stephanopoulos.
Bolduan asked if there's any signal that Cohen is now cooperating with prosecutors.
Giuliani emphasized Cohen "telling the truth" on three separate occasions during the interview.
During an interview over the weekend, Trump's personal attorney, Rudy Giuliani, said that the president would only agree to an interview with Mueller if the special counsel revealed how the investigation would conclude.
It wrote that Trump will only agree to it if Mueller "has evidence that Mr. Trump committed a crime and that his testimony is essential to completing the investigation".
Cohen, who was known as Mr. Trump's fixer, is now under criminal investigation by the Justice Department.
Since returning to Trumps' orbit as his new lead attorney, Giuliani has become a fixture on television, occasionally making news and routinely promising anyone who will listen that he will bring the Russian Federation collusion investigation to a close.
A day after he tweeted "I will always protect my POTUS" in April, the FBI raided his home, office and hotel room as part of a probe by federal prosecutors in NY into his business dealings.
Trump has long contended that the investigation is an excuse by Democrats to explain his upset win over Democrat Hillary Clinton, a former USA secretary of state.
Giuliani appeared on Sunday morning talk shows, where the president's legal adviser urged Cohen to "tell the truth" about Russian election interference and the Trump Tower meeting with Donald Trump Jr. and Russian agents.
Cohen has scrubbed a reference of his long-time representation of Trump from professional credentials, saying recently, "My wife, my daughter and my son have my first loyalty and always will", not the president.
The Cohen interview was released on the same day that a former federal judge vetting material seized from him said in a court filing that over a million items were turned over to prosecutors after she determined they weren't protected by attorney-client privilege.