"Rudy is the unique peer of the president of all people who work in the rule of law," said one with knowledge of their relationship.
But Giuliani also stepped down from his prominent public role as presidential advocate in the media after he himself came under control of his efforts to shape US policy toward Ukraine. Those activities caught the attention of federal prosecutors in Manhattan, and Giuliani announced earlier this week that he had hired his own legal team.
Giuliani, who says he represents Trump for good, confirmed to CNN Thursday that he remains in the legal position of the president's team.
"It is an honor for me to be part of a team that is committed to defending President Trump against this false demand … made by cunning Democrats on the Capitol Hill. This is a disgrace to our democracy," Giuliani said in a statement emailed by his assistant.
Asked how often he and Trump still talk, Julian replied, "How often do I and President Trump communicate is completely privileged."
The last known face-to-face meeting with Julian was on October 1
2th. when they met at noon at Trump's Golf Course in Virginia. A person close to the White House said their discussion was friendly and focused primarily on politics.
An acquaintance said that recently in late October, Trump called Julian once a day. Another acquaintance said the president enjoyed Juliani's company and discussed topics beyond his legal issues.
The Julian factor
to complicate the close relationship between Trump and Giuliani as it becomes clearer how Giuliani's shadow foreign policy operation with Ukraine has put his most prominent client in political jeopardy
of Ukraine. And testimony released this week by House Democrats further confirmed the role of the former New York mayor in a series of events surrounding the temporary detention of US military aid.
Gordon Sundland, US ambassador to the European Union and one of the witnesses whose testimony was released this week, told MPs that Trump had directed administration officials to treat Juliani as a person concerned with issues related to Ukraine .
"He was just saying, Talk to Rudy, talk to Rudy," Sundland testifies.  Former Special Envoy to Ukraine, Kurt Volker, testifies to what he calls the "Giuliani Factor" – that is, the way Giuliani often colors Trump's views on Ukraine and its new president, Vladimir Zelensky, would be at odds with the official diplomatic efforts of the administration.
"The negative narrative that Mr. Giuliani pointed out was the problem … it impeded our ability to build relationships the way we should." Volker told deputies.
And the testimony of George Kent, a foreign service career officer who serves as deputy assistant secretary for European and Eurasian affairs, demonstrates how much administration officials view Julian's influence on Trump's views on Ukraine as a problem.  Kent called for public and private efforts by Giuliani to urge the new Ukrainian government to declare criminal investigations that would benefit Trump politically, a "campaign of lies."
Kent also described the effects of the Giuliani factor on other officials, including Sondland's "release," which raises concerns in the State Department that the president's personal lawyer facilitates the diversion of official U.S. foreign policy processes.
"A little rough around the edges"
"He may look a little rough around the edges, but he's also a great person and a great lawyer," the president wrote.  The last time Trump mentioned Giuliani in public was October 30, when he told reporters on the White House's South Lawn that his lawyer was a "good man."
"I think Rudy Giuliani is a great crime fighter. He was the greatest mayor in New York history, but he was a great crime fighter. He is always looking for the corruption that more people need to do, "Trump said.
Trump's loyalty to Julian goes back to their similar backgrounds and years of friendship. The two came to prominence together in the 1980s and 1990s in New York, supported their mutual political endeavors and – when they failed – offered solace (Giuliani said he spent a month at Trump's Mar-a-Lago estate after an ill-fated presidential term in 2008)
and their relationship was strengthened. after the Access Hollywood tape came out weeks before the 2016 election Giuliani remains a public dog for an attack on Trump's behalf, something that Trump's close man identified as an important moment in solidifying the president's confidence in him. To the president, Giuliani's value is less his legal advice than his willingness
But Giuliani has undoubtedly withdrawn from public view in recent weeks as scrutiny has been directed at him. His most recent television interview was on October 9 on Fox News, the same day two associates who helped Julian contact Ukrainian officials, Lev Parnassus and Igor Fruman, were arrested and later charged with federal money laundering charges. . He also appears to have less frequently spoken to reporters since then.
However, Giuliani's Twitter feed remains active. On Thursday, for example, Giuliani defended himself and Trump.
"The evidence, when fully disclosed, will show that this present farce is as much a frame and a fraud as the Russian collusion, perhaps worse and will prove the president innocent," he writes
Seconds later, Giuliani tweets
the names of his new criminal defense team.
Kevin Liptak of CNN contributed to this story.