There’s always the possibility that something would slip through that would be the tiny tip of a much larger iceberg that would be revealing,” said Larry J. Sabato, director of the University of Virginia Center for Politics.

Congress passed a law in 1992 requiring the documents surrounding President Kennedy's assassination to be released by 2017, but the release has been held up by national security concerns.

President Trump told security agencies to develop plans to make public all documents related to the assassinations of John F. Kennedy, Robert F. Kennedy and the Rev. Dr. Martin Luther King Jr.