Dozens of former national security officials have joined the chorus condemning President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE’s decision to revoke former CIA Director John Brennan John Owen BrennanJournalism or partisanship? The media's mistakes of 2016 continue in 2020 Comey on Clinton tweet: 'I regret only being involved in the 2016 election' Ex-CIA Director Brennan questioned for 8 hours in Durham review of Russia probe MORE’s security clearance.

More than 150 former officials signed a brief statement Monday concurring with other recent statements opposing the “actual or threatened removal of security clearances from former government officials.”

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“All of us believe it is critical to protect classified information from unauthorized disclosure,” the statement reads. “But we believe equally strongly 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.”

The statement notes that the officials do not necessarily agree with Brennan’s harsh criticism of Trump or “the way in which he expressed them,” but says that the country will be “weakened if there is a political litmus test applied before seasoned experts are allowed to share their views.”

The Monday statement follows a statement from a dozen former officials, including past CIA directors, calling Trump’s move "inappropriate and deeply regrettable.”

Trump announced last week that he was revoking Brennan’s clearance, saying through press secretary Sarah Huckabee Sanders that the former CIA chief’s "lying" and "increasingly frenzied commentary" meant his security clearance was a threat to national security.

“Mr. Brennan’s lying and recent conduct characterized by increasingly frenzied commentary is wholly inconsistent with access to the nation’s most closely held secrets and facilities, the very aim of our adversaries, which is to sow division and chaos,” Trump said.

The president is reviewing security clearances for a number of other former officials who have been critical of his administration, including former FBI Director James Comey James Brien ComeySteele Dossier sub-source was subject of FBI counterintelligence probe Judge will not dismiss McCabe's case against DOJ Democrats fear Russia interference could spoil bid to retake Senate MORE and former Deputy Attorney General Sally Yates Sally Caroline YatesButtigieg, former officials added to Biden's transition team The Hill's 12:30 Report: Delegates stage state-centric videos for the roll call Trump fires back at Yates for convention speech: 'Terrible AG' MORE. Former officials typically keep their clearances in order to provide counsel to their successors.

Brennan, one of the most outspoken critics of the president, has said that he is willing to take legal action to prevent Trump from revoking other security clearances.