While most of the investigative information on Kennedy's death has been released by the National Archives over the years, a small batch of files remain locked away and Trump is the only one who can authorise their release.
Trump caveated the decision as being "subject to the receipt of further information".
President Donald Trump says that he will allow the JFK assassination document release scheduled for next week (Oct. 26), but there was a caveat. The National Archives is required to release all of its JFK documents by Thursday, 25 years to the day after President George H.W. Bush signed the JFK Assassination Records Act.
The White House said in a statement to Politico earlier this week that the White House was working "to ensure that the maximum amount of data can be released to the public" by next week's deadline. Lee Harvey Oswald was arrested for the crime, but he was never prosecuted due to his murder by Jack Ruby two days later. Trump said Saturday he would approve the release of those top secret documents.
Trump's longtime political adviser Roger Stone, who helped launch Trump's campaign for president, is also an avid conspiracy theorist who wrote a book about the wild claim that President Lyndon B. Johnson, Kennedy's vice president, was involved in Kennedy's assassination.
White House spokeswoman contradicts Trump, but gets no Left love
She added that Trump "was nearly like joking" and that his comment was "absolutely insane , unnecessary". Kelly's voice grew thin at points during an extraordinary and emotional briefing at the White House.
In his tweet, Trump seemed to strongly imply he was going to release all the remaining documents, but the White House later said that if other government agencies made a strong case not to release the documents, he wouldn't.
The move comes against the advice of federal bodies that have expressed concern at the release of the documents.
Trump can withhold the release of certain documents if he believes their release could pose harm to USA intelligence, law enforcement, the military or U.S. foreign relations.
The files reportedly may include a Central Intelligence Agency personality study of Lee Harvey Oswald, testimonies from former Central Intelligence Agency officers, letters from then-FBI Director J. Edgar Hoover, as well as files on other suspected players in the assassination.