"Michael Cohen plead (sic) guilty to two counts of campaign finance violations that are not a crime", he tweeted, adding that "President Obama had a big campaign finance violation and it was easily settled!"
Despite Trump's defiant tone, Washington-based campaign finance expert Kate Belinski, of the Nossaman law firm, said to expect legal consequences for both Trump and his campaign - most likely in the form of a civil complaint before the Federal Election Commission.
"Unlike Michael Cohen, he refused to "break" - make up stories in order to get a 'deal'". McDougal, who has said she had a months-long affair with Trump, sold her story for $150,000 to AMI but it was never published, a practice known as "catch and kill" to prevent a potentially damaging article from being published. "For 30, 40 years I've been watching flippers".
Michael Cohen used to serve as Trump's personal lawyer, but has recently found himself in a whirlwind of legal battles.
Cohen says he handled hush money payments to two women during the 2016 presidential campaign.
But an unchastened Trump appears intent on riding out the storm as Washington grapples with the latest upheaval in his tumultuous presidency. "It nearly ought to be outlawed".
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"I don't know how you can impeach somebody who's done a great job".
Although Cohen did not name them, the women were believed to be porn star Stormy Daniels and Playboy model Karen McDougal. Behind closed doors, Trump expressed worry and frustration that a man intimately familiar with his political, personal and business dealings for more than a decade had turned on him.
Under US election rules, any payments made with the aim of influencing a vote must be reported.If Mr Trump were to be prosecuted over the money - not through the normal courts, because he is the sitting president, but conceivably in Congress, through an impeachment process - investigators would have to prove that he had indeed given the money to Cohen for electoral reasons.
The investigation into Cohen stemmed in part from a referral by U.S. Special Counsel Robert Mueller, who is investigating whether there was coordination between Trump's 2016 presidential campaign and Russian Federation.
Some Democrats are openly discussing the possibility of impeaching Trump if they should take control of the House in November's elections.
The Trump campaign denies its involvement and claims that anyone could have purchased the website at the time for as little as $7.