From Mr. Trump’s memorandum:

The American public expects — and deserves — its Government to provide as much access as possible to the President John F. Kennedy Assassination Records (records) so that the people may finally be fully informed about all aspects of this pivotal event. Therefore, I am ordering today that the veil finally be lifted. At the same time, executive departments and agencies (agencies) have proposed to me that certain information should continue to be redacted because of national security, law enforcement, and foreign affairs concerns. I have no choice — today — but to accept those redactions rather than allow potentially irreversible harm to our Nation’s security. To further address these concerns, I am also ordering agencies to re-review each and every one of those redactions over the next 180 days. At the end of that period, I will order the public disclosure of any information that the agencies cannot demonstrate meets the statutory standard for continued postponement of disclosure under section 5(g) (2)(D) of the President John F. Kennedy Assassination Records Collection Act of 1992 (44 U.S.C. 2107 note) (the “Act”).

The decision to postpone the release of some documents will invariably lead to suspicions that the government is still protecting secrets about the case. Administration officials said there was no cover-up, just an effort to avoid compromising national security, law enforcement or intelligence gathering methods.

Researchers found a treasure trove of ‘obscure clues’ and ‘shiny objects.’

Larry J. Sabato, the founder and director of the Center for Politics at the University of Virginia, and a team of researchers were reviewing the files on Thursday night. He sent a report of what they had found so far:

As expected, these incomplete raw files are, often, a mess. Handwritten notes from the C.I.A. and others are often illegible. It will take an enormous amount of work and lots of time to put this together. Think of this as an unassembled million-piece puzzle.

Since the good stuff has mainly been withheld for now — or forever — we are primarily looking for obscure clues and shiny objects. Here, the files do not disappoint. In no particular order, our research team at the University of Virginia found these intriguing documents:

• Mexico was a cooperative partner with the United States in many ways — from helping to wiretap the Soviet and Cuban Embassies well prior to the assassination, to thorough attempts to investigate Lee Harvey Oswald’s ties in the country after Kennedy’s murder. Sources told the C.I.A. that Oswald had deposited $5,000 in a Mexican bank. In a document dated March 9, 1964, Mexico was reported to have traced all deposits in Mexican banks, looking for the money. They found no such Oswald transaction.

• The F.B.I. closely monitored the activities of attorney and conspiracy advocate Mark Lane, who was representing Marguerite Oswald, mother of Lee. According to an F.B.I. source, a bizarre meeting Mr. Lane had with a Polish journalist in January 1964 saw wild conspiracy theories tossed around, including a ridiculous claim in a far-right Italian newspaper that J.D. Tippit, the Dallas policeman killed by Oswald shortly after Oswald shot Kennedy, was the real presidential assassin — and that Jack Ruby had killed Mr. Tippit.

• A C.I.A. document alleges that Oswald may have been accompanied on his mysterious September 1963 trip to Mexico City by “El Mexicano.” According to another document, “El Mexicano” is believed to have been Francisco Rodriguez Tamayo, the captain of Cuban Rebel Army 57 until he defected to the United States in June of 1959. A third file also identifies Rodriguez Tamayo as the head of the anti-Castro Training Camp at Pontchartrain, La.