California Rep. Adam Schiff, the ranking Democrat on the House intelligence committee who also has been a frequent critic of Trump, tweeted that, "In adding John Brennan to his enemies list, Trump demonstrates again how deeply insecure and vindictive he is - two character flaws risky in any president".
Reines followed up on his profanity-laced attack on the president by claiming, without evidence, that the move "confirms the existence of an N-word tape".
Other swift negative reaction on the social media platform called Trump's decision an attempt to distract attention from the trial of former Trump campaign manager Paul Manafort and an explosive tell-all book written by former Trump adviser Omarosa Manigault Newman. He also compared Trump to "foreign despots".
Sanders said Trump is also reviewing the clearances of James Clapper, James Comey, Michael Hayden, Sally Yates, Susan Rice, Andrew McCabe, Lisa Page, Peter Strzok and Bruce Ohr - all people who have voiced political criticism of Trump.
It is for the foregoing reasons that I have exercised my Constitutional authority to deny Mr. Brennan access to classified information, and I will direct appropriate staff of the National Security Council to make the necessary arrangements with the appropriate agencies to implement this determination.
Why did Sanders maintain that Trump ordered Brennan's clearance revoked on Wednesday? It should gravely worry all Americans, including intelligence professionals, about the cost of speaking out. The official said they worry that Trump will go further and revoke security clearances of individuals who are now working directly on the Russian Federation investigation. "I will not relent".
High-ranking government officials sometimes retain their security clearances after leaving office, allowing them the ability to provide advice as needed to their successors.
"With regard to the implied threat today that I could lose my clearance, that will have no impact on what I think, say or write", Hayden wrote.
Critics of Brennan have responded by noting his vocal partisanship and the fact he supported the Communist Party's presidential candidate in the 1970s in the midst of the Cold War.
The White House is revoking the security clearance of John Brennan, a former director of the Central Intelligence Agency, and mulling pulling them for several other former intelligence chiefs and other officials.
The president also said he was reviewing the security clearances of other former national security and law enforcement officials - all of whom have been critical of him.
"I don't like it at all", said Republican Senator Bob Corker, referring to Trump's decision.
"An enemies list is ugly, undemocratic and un-American".
He added that, "Leaders behave like this in dictatorships, not democracies".