And he has good reason to be.
According to reports, the raid was executed under the auspices of the United States Attorney for the Southern District of NY, and would therefore have had to have been authorized by recent Trump appointee Geoffrey Berman.
Other documents collected by officials from Cohen's Rockefeller Center office and Park Avenue home.include emails, tax documents and business records.
The raid prompted a new blast on Tuesday (Wednesday NZ Time) from the president, who tweeted that "Attorney-client privilege is dead!"
Cohen's lawyer Stephen Ryan confirmed authorities "seized the privileged communications", between him and his clients.
'This is a pure and simple witch hunt, ' the president said of Mueller's Russian Federation probe. If communications typically covered by attorney-client privilege are deemed to be "in furtherance of a current or a planned crime or fraud" then the privilege does not apply.
Last week, asked if he was aware that Cohen had paid $130,000 to Daniels, Trump said he did not know about it. Cohen was inside the New York City hotel room where he's been staying when Federal Bureau of Investigation agents suddenly showed up at his door. Here are some of the reasons why. Cohen did not make a public statement in response to Trump's comment. "He oversaw almost all the foreign deals as the Trump Org shifted its focus to sketchy third-tier overseas oligarchs", noted journalist Adam Davidson, who has reported on some of those foreign deals.
Trump was not a conventional candidate, though, he was a revolutionary one ...
Russian Federation and Trump both deny any wrongdoing.
With Cohen of interest to federal authorities in New York City, perhaps Trump chose not to distance himself because he no longer can. And now federal agents are combing through Cohen's files, computers, and phone records. "I think it's more likely that internal procedures were followed, given that it went through the U.S. Attorney in SDNY and not Mueller's office". That doesn't mean convictions are guaranteed, but it suggests that Michael Cohen at least, and probably his client as well, are in some extremely hot water.
And the attorney general, Mr. Trump also said, "made a awful mistake" when he recused himself, and he "should have let us know if he was going to recuse himself".
Or Rosenstein's replacement could fire Mueller - although that would kick up much more of a firestorm. "This is a disgraceful violation of attorney-client privilege and [the] left is going to regret changing the rules that protected them".
Search warrants for law offices are rare because of concerns about privileged materials, legal experts say.
"We don't have the particulars on what they're looking for", Healy said.
That said, "the Attorney General may request that the Special Counsel provide an explanation for any investigative or prosecutorial step, and may after review conclude that the action is so inappropriate or unwarranted under established Departmental practices that it should not be pursued". Ryan continues to note how "I have been advised by federal prosecutors that the NY action is, in part, a referral by the Office of Special Counsel, Robert Mueller".
'Deputy Rosenstein - Rod Rosenstein - he wrote the letter, very critical, of Comey, ' Trump pointed out. "He was as angry and frustrated as I have ever seen him". (Legal cover, mind you, that would be symptomatic of a deeply disconcerting abuse of power by the president.) How is this worse than just firing Mueller? But I wouldn't put money on it.