The president tweeted Saturday morning that he will allow the release "subject to the release of further information".
That deadline was set in 1992, when Congress passed the JFK Assassination Records Collection Act.
Ken Hughes, a presidential researcher at the University of Virginia's Miller Center, told CNN the files could shed light on the United States involvement in the attempts to assassinate Castro as well as the US-approved coup of South Vietnamese leader Ngô Đình Diệm in 1963.
Politico also reported that longtime Trump adviser Roger Stone was urging Trump to release the files, and that Stone said in a recent interview he felt "optimistic" that Trump would allow the release of the files. Two Republican lawmakers introduced legislation on Capitol Hill this fall to prod Trump into releasing the last remaining records related to the assassination.
The White House later issued a statement to reporters, saying, "The President believes that these documents should be made available in the interests of full transparency unless agencies provide a compelling and clear national security or law enforcement justification otherwise".
"No reason 2 keep hidden anymore", Grassley tweeted earlier this month.
The move comes against the advice of federal bodies that have expressed concern at the release of the documents.
Most of the files are believed to be from the 1960s and 1970s, stemming from the 1963 assassination and aftermath.
Trump can withhold the release of certain documents if he believes their release could pose harm to United States intelligence, law enforcement, the military or United States foreign relations.
"There's a lot for conventional historians - we non-conspiracy theorists - to look forward to", he said.
Doom On Switch Finally Has A Release Date
The Nintendo Switch port is developed by Panic Button, the studio responsible for the upcoming Rocket League port on Switch. As to more Bethesda games coming to the Switch, they only repeated that Skyrim and Wolfenstein will be arriving soon.