Later Friday, 60 additional former CIA officials issued a statement objecting to the Brennan action and stating their belief "that former government officials have the right to express their unclassified views on what they see as critical national security issues without fear of being punished for doing so."
While he has frequently called Mueller's inquiry a "rigged witch hunt," and did so again Friday, Trump's move against Brennan, and threats to move against others, has brought the controversy to a new level. Sanders announced the Brennan decision Wednesday, citing what she called his "erratic conduct" and "wild outbursts" on television, as well as allegedly erroneous statements he had made.
The senior White House official acknowledged that the step against Brennan had been prepared in late July, when Sanders first said Trump was considering it. But the decision to take that step was made this week to divert attention from nonstop coverage of a critical book released by fired Trump aide Omarosa Manigault Newman.
Consideration is being given to holding other prepared documents in reserve for similar opportunities in the future, the official said.
Brennan, a career CIA official who served as director of the agency during President Barack Obama's second term, briefed Trump during the presidential transition about intelligence conclusions that Russia had interfered in the election on Trump's behalf. He has since been harshly critical, on Twitter and in appearances as a television commentator, of the president's foreign policy and treatment of the intelligence community. He denounced Trump's performance at a summit with Russian President Vladimir Putin last month as "treasonous."
The White House did not suggest that Brennan had committed any security breaches, and Trump himself, in an interview with the Wall Street Journal, linked the clearance revocation to the "sham" Russia investigation, which he said Brennan and others had "led."
It was unclear what the argument would be for revoking Ohr's clearance, since Deputy Attorney General Rod Rosenstein, while not specifying Ohr's current job, has said he has had no involvement in the Mueller investigation, begun last year.
But Ohr knew Christopher Steele, the former British intelligence agent who was paid in 2016 to investigate Trump's ties to Russia, first by anti-Trump conservative organizations and later by Hillary Clinton's campaign. According to news reports and congressional testimony, the two men discussed Trump before the election, and Ohr reported the conversation to the FBI.
Ohr is the only current official on the White House list of clearances Trump wants to lift. The others are former director of national intelligence James Clapper Jr.; former CIA and FBI directors Michael Hayden and James Comey; Obama national security adviser Susan Rice; former FBI officials Andrew McCabe, Lisa Page and Peter Strzok; and former acting attorney general Sally Yates. Several of them have said they no longer have clearances.
In his Friday comments, Trump said he had gotten a "tremendous response" for his action against Brennan. "If anything, I'm giving him a bigger voice," he said. "Many people don't even know who he is . . . I've never respected him."
Similarly, the president said he did not know retired Navy Adm. William McRaven, former head of the US Special Operations Command, who in a Thursday op-ed in The Washington Post called Trump's tactics "McCarthy-era" and said it would be an honor to have Trump lift his security clearance "so I can add my name to the list of men and women who have spoken up against your presidency."
Meanwhile, the statement by former CIA directors and deputies was quickly pulled together Thursday by George Tenet, who served as CIA director in the Bill Clinton and George W. Bush administrations, and former deputy director Michael Morell, according to Hayden, who also signed the document.
Other signers include Clapper and former CIA directors William Webster, Robert Gates, Porter Goss, Leon Panetta and David Petraeus, as well as five former deputy directors and former director of national intelligence Dennis Blair.
"We all agree that the president's action regarding John Brennan and the threats of similar action against other former officials has nothing to do with who should and should not hold security clearances - and everything to do with an attempt to stifle free speech," the statement said.
Several former officials have said they rarely use their clearances, which allow them to serve as institutional memories and provide advice to current officials, if requested. Hayden said he had been to the agency once - at his own request, for a briefing on Africa in preparation for a speech - since stepping down a decade ago.
While Brennan was a clear target of Trump's action, Hayden said in an interview, another is "everybody else on the list. . . . Watch your step or this is going to happen to you."
"The third group, I think, is the broader intelligence community," Hayden said. "In essence, it's been demonstrated to them that if you tell this president something he doesn't want to hear, something he doesn't believe, he's prepared to retaliate."
"There are a lot of times you have to go in there and tell him something he doesn't want to hear. This series of events," he said, "has made that even harder than it already is."
