WASHINGTON -- In a damning depiction of Donald Trump, the president's former lawyer cast him as a racist and a con man who used his inner circle to cover up politically damaging allegations about sex and who lied throughout the 2016 election campaign about his business interests in Russia.

A day after publicly testifying before the House's oversight committee, Michael Cohen is expected to continue testifying about his work with Trump and knowledge of the Trump business empire when he appears Thursday before the House intelligence committee, albeit behind closed doors.

Cohen, who previously pleaded guilty to lying to Congress, told lawmakers Wednesday that Trump had advance knowledge and embraced the news that emails damaging to Democratic rival Hillary Clinton would be released during the campaign. But he also said he had no "direct evidence" that Trump or his aides colluded with Russia to get him elected, the primary question of special counsel Robert Mueller's investigation.

Cohen, shaking off incessant criticism from Republicans anxious to paint him as a felon and a liar, became the first Trump insider to pull back the curtain on a version of the inner workings of Trump's political and business operations. He likened the president to a "mobster" who demanded blind loyalty from underlings and expected them to lie on his behalf to conceal information and protect him -- even if it meant breaking the law.

"I am not protecting Mr. Trump anymore," Cohen declared.

"My loyalty to Mr. Trump has cost me everything: my family's happiness, friendships, my law license, my company, my livelihood, my honour, my reputation and soon my freedom," Cohen said. "I will not sit back, say nothing and allow him to do the same to the country."

Cohen's matter-of-fact testimony about secret payments and lies unfolded as Trump met with North Korean leader Kim Jong Un. At a Vietnam hotel and unable to ignore the drama thousands of miles away, Trump lashed out on Twitter, saying Cohen "did bad things unrelated to Trump" and "is lying in order to reduce his prison time."

Later, Trump, speaking at a press conference in Vietnam after the summit with Kim ended early, said he was a "little impressed" that Cohen told Congress there was "no collusion" between his presidential campaign and Russia.

Trump said Thursday he tried to watch as much of Cohen's marathon congressional hearing as he could. He slammed the hearing as "fake" and said it was a "terrible thing" for Democrats to hold it during the summit.

In testimony that cut to the heart of federal investigations encircling the White House, Cohen said he arranged a hush money payment to a porn actress at Trump's behest and agreed to lie about it to the public and the first lady. Cohen said he had lied by claiming that Trump was "not knowledgeable" about the transaction even though Trump had directly arranged for his reimbursement. And he said he was left with the unmistakable impression Trump wanted him to lie to Congress about a Moscow real estate project, though the president never directly told him so.

In one revelation, Cohen said prosecutors in New York were investigating conversations Trump or his advisers had with him after his office and hotel room were raided by the FBI last April. Cohen said he could not discuss that conversation, the last contact he said he has had with the president or anyone acting on his behalf, because it remains under investigation.

The appearance marked the latest step in Cohen's evolution from legal fixer for the president -- he once boasted he'd "take a bullet" for Trump -- to a foe who has implicated him in federal campaign finance violations. The hearing proceeded along parallel tracks, with Democrats focusing on allegations against Trump while Republicans sought to undermine Cohen's credibility and the proceeding itself.

As Republicans blasted him as a convicted liar, a mostly unrattled Cohen sought to blunt the attacks by repeatedly acknowledging his own failings. He called himself a "fool," warned lawmakers of the perils of blind loyalty to a leader undeserving of it and pronounced himself ashamed of what he'd done to protect Trump.

Cohen is due to begin a three-year prison sentence in May, and he described himself as co-operative with multiple investigations in hopes of reducing his time behind bars. He is seen as a vital witness for federal prosecutors because of his proximity to the president during key episodes under investigation and their decade-long professional relationship.

The first of six Trump aides charged in the Trump-Russia investigation to testify publicly about crimes committed during the 2016 campaign and in the months that followed, Cohen also delivered biting personal commentary on a president he said never expected to win in the first place.

"He never expected to win the primary. He never expected to win the general election," Cohen said. "The campaign -- for him -- was always a marketing opportunity."

He recounted how Trump made him threaten schools he attended to not release his grades and SAT scores and denigrated blacks as "too stupid" to vote for him. He said Trump once confided to him that, despite his public explanation of a medical deferment from the Vietnam War because of bone spurs, he never had any intention of fighting there.

"I find it ironic, President Trump, that you are in Vietnam right now," Cohen said.

Cohen gave lawmakers his first-person account of how he arranged to buy the silence of porn actress Stormy Daniels and former Playboy model Karen McDougal, who said they had sex with Trump. He described a February 2017 conversation with Trump in the Oval Office in which the president reassured him that reimbursement checks sent through Federal Express were coming but would take some time to get through the White House system.

He said the president spoke to him a year later to discuss the public messaging around the transaction and had even once put his wife, Melania Trump, on the phone so that Cohen could lie to her.

"Lying to the first lady is one of my biggest regrets," Cohen said. "She is a kind, good person. I respect her greatly, and she did not deserve that."

Federal prosecutors in New York have said Trump directed Cohen to arrange payments to buy the silence of the porn actress and the former Playboy model in the run-up to the 2016 campaign. Cohen has said he acted out of "blind loyalty."

He said he was presenting the committee with a copy of a check Trump wrote from his personal bank account after he became president to reimburse Cohen for the hush money payments. He offered up other exhibits as well, including examples of financial statements he said Trump had drawn up to show he was wealthier than he really was.

In an allegation relating to Mueller's probe, Cohen said he overheard Trump confidant Roger Stone telling the candidate in the summer of 2016 that WikiLeaks would dump damaging information about Clinton.

Trump put Stone on speakerphone as Stone relayed that he had communicated with WikiLeaks founder Julian Assange and that "within a couple of days, there would be a massive dump of emails that would damage Hillary Clinton's campaign," Cohen said. Damaging emails U.S. officials say were hacked by Russia were later released by WikiLeaks.

Trump responded by saying "wouldn't that be great," Cohen said.

Stone disputed that account Wednesday, and Barry Pollack, a lawyer for Assange, said Stone and Assange did not have the telephone call that Cohen described.

Cohen's claims that Trump had advance knowledge of the emails contradict the president's assertions that he was in the dark, and it is unclear how legally problematic that could be for Trump anyway. Mueller has not suggested that mere awareness of WikiLeaks' plans, as Stone is purported to have had, is by itself a crime.

Cohen also suggested Trump implicitly told him to lie about a Moscow real estate project. Cohen has admitted lying about the project, which he says Trump knew about as Cohen was negotiating with Russia during the campaign. Cohen said Trump did not directly tell him to lie, but "he would look me in the eye and tell me there's no business in Russia and then go out and lie to the American people by saying the same thing."

Cohen said he does not have direct evidence that Trump colluded with the Russian government during the election but he has "suspicions," including after a June 2016 meeting between the president's oldest son and a Kremlin-connected lawyer.

"I wouldn't use the word 'colluding.' Was there something odd about the back-and-forth praise with President Putin?" Cohen said. "Yes, but I'm not really sure I can answer that question in terms of collusion."

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Associated Press writers Laurie Kellman, Lisa Mascaro, Chad Day, Michael Balsamo and Colleen Long contributed to this report.

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