The Canuck Letter dirty trick

The Canuck Letter dirty trick was a political attack on Edmund Muskie that became a revealing test of how a secret campaign tactic could be exposed, denied, and folded into a larger scandal. White House aide Kenneth Clawson told reporter Marilyn Berger that he had written the letter to damage Muskie, whom he described as the candidate posing the strongest opposition. When Berger reported the admission, Clawson repudiated it. The Washington Post chose to publish her account alongside his denial, making the contested authorship central to a broader report on political espionage and sabotage.

The admission to Marilyn Berger

On September 25, 1972, Clawson telephoned Berger at her apartment and invited her for a drink. Berger, a former Newsday reporter and diplomatic specialist, later recorded their conversation in a detailed memorandum. Their discussion turned to the difference between reporting on the White House and working inside it. Clawson said that reporters knew only a fraction of what went on; he suggested that, now inside the administration, he could cover the White House more fully. In that conversation he claimed authorship of the Canuck Letter.

Berger’s memorandum preserved not only the claim but the explanation she said accompanied it. Clawson described Muskie as the candidate who would represent the strongest opposition and said they wanted him out of the contest. Berger asked whether Muskie’s reaction had exceeded expectations; Clawson indicated that it had. Asked how he could take part in such dishonest conduct after having been a reporter, he distinguished his earlier journalistic work from politics, presenting the letter as part of how politics operated. He also spoke warmly of Richard Nixon. These reported remarks tied the operation, in Clawson’s account, to a political objective, while stopping short of establishing who else had authorized or directed it.

Berger recognized that her role had changed: a reporter who had heard an apparent admission was now herself part of the story. She wrote down the conversation and, when Clawson accepted her invitation to lunch the following day, told him that Bob Woodward and Carl Bernstein were pursuing a larger story and that she had already told colleagues he said he wrote the letter. Clawson appeared serious. He disputed that the reporters could have traced the letter to the White House, said he would deny his earlier statement, and asked whether he could give the reporters his own account. Berger’s notes made the retreat from the private admission part of the record as well.

Denial and editorial decision

After studying Berger’s memorandum, the editors at The Washington Post sent Woodward to call Clawson at the White House. Clawson denied that he had ever admitted writing the letter and characterized Berger’s account as a misunderstanding. He said the conversation had been informal, not an interview, and could not recall where it had taken place. He also asked that his denial be included. The editors nevertheless believed Berger and decided that the paper would use her account.

The confrontation did not produce an uncontested confession. Instead, the reporting presented two competing accounts: Berger’s specific, contemporaneously documented recollection and Clawson’s denial. That distinction mattered. The article reported what Berger said Clawson had told her; it did not convert the denial into confirmation, nor did it erase it. In a later exchange, Clawson’s memo to Charles Colson referred to his being named in connection with the Muskie Canuck Letter and said he would spend a second Nixon administration paying back The Washington Post. Another memo indicated that H. R. Haldeman had tried to attribute authorship to Colson rather than Clawson. Those documents show that the question of authorship remained politically contested; they do not, by themselves, establish the full chain of command behind the operation.

From disputed letter to wider investigation

The Canuck Letter was one of the concrete examples the reporters used as they connected individual political dirty tricks to a broader pattern. At first, Woodward and Bernstein had been preparing separate pieces: Woodward’s account centered on the letter and Clawson’s alleged role, while Bernstein’s dealt with Donald Segretti and political espionage and sabotage. At an editorial meeting, Ben Bradlee told them to combine the material because it belonged in one story. The resulting article placed the letter within a much larger account of efforts to disrupt and spy on Democratic campaigns.

The article’s opening characterization of a White House-directed campaign was an interpretation drawn from strands of evidence, sources, deduction, and the reporters’ accumulated knowledge—not a conclusion explicitly attributed to federal investigators. The authors knew that the breadth of the interpretation was risky and that some examples remained incomplete. But the Canuck Letter and Segretti’s activities supplied hard, reportable particulars. The story described Berger’s account of Clawson’s September 25 admission and included his denial; the letter was treated as a specific instance through which readers could assess the larger allegations.

That arrangement made the letter more than an isolated campaign attack. It offered a traceable allegation, a named White House aide, a reporter willing to document what she said she heard, and a denial that forced the paper to show its evidentiary basis. The broader claims remained subject to dispute, but the letter helped give those claims a concrete point of entry.

Public dispute and political consequence

The White House’s response helped turn the reporting into a contest over credibility. After the article appeared, the President’s men challenged The Washington Post, and newspapers around the country reported their anger. The response also gave the paper’s allegations greater public currency. The next day, The New York Times published telephone records showing that Segretti’s telephone or credit card had been used for repeated calls to the White House, Dwight Chapin’s home, and Howard Hunt’s home and office. Those records concerned the wider operation rather than proving Clawson’s authorship, but they made it harder for the White House to dismiss the reporting as unsupported insinuation.

The Canuck Letter thus acquired significance through both the alleged act and the struggle over its disclosure. Clawson’s private attribution, Berger’s written account, his subsequent denial, and the editors’ decision to publish preserved the dispute in a form that readers could examine. The Washington Post later became a target of White House criticism over its Watergate reporting, and on April 30, 1973, press secretary Ronald Ziegler publicly apologized to the paper and to Woodward and Bernstein for earlier criticism. The apology did not settle every allegation about the letter, but it marked a reversal in the public credibility contest surrounding the paper’s investigation.