Trump's ex-lawyer: Giuliani hurt Trump's case by flip-flopping on Cohen
"One of President Trump's former lawyers said Tuesday that the president made an error in hiring former New York City Mayor Rudy Giuliani..."
By Maegan Vazquez, CNN
Updated 10:15 PM ET, Fri July 27, 2018 Cuomo, Giuliani clash over Trump-Cohen tapes
VIDEO - 2:06
Washington (CNN) -- President Donald Trump's lawyer, Rudy Giuliani, substantially weakened his case against Michael Cohen by going back and forth as to whether Cohen could tell federal prosecutors the truth, said Jay Goldberg, President Donald Trump's friend and former lawyer.
After CNN aired the audio, Giuliani called Cohen a "pathological liar" and said he doesn't "see how he has any credibility."
"I expected something like this from Cohen," Giuliani told CNN's Chris Cuomo on Thursday. "He's been lying all week. He's been lying for years."
Goldberg, who served as Trump's divorce lawyer for the President's first two marriages, said Giuliani "immeasurably" damaged his case against Cohen by changing his tune.
"I knew as soon as Giuliani spoke that he was damaging Trump's case immeasurably," Goldberg told CNN's "Erin Burnett Out Front." "It ranks near 100 in terms of damage."
"No defense lawyer would say that," Goldberg later added.
Goldberg argued that Giuliani's early assertion on ABC's "This Week with George Stephanopoulos" that Cohen would tell federal prosecutors the truth "strips the defense of its main weapon of claiming that he is coloring his testimony to favor the government, so he can get a letter of cooperation."
The former Trump lawyer also said that he advised the President not to hire Giuliani.
"I didn't think Giuliani knew how to handle a case from the defense perspective. He was a long-time prosecutor and he didn't know how to set a case up for the possible impeachment of a witness such as Cohen," Goldberg said.