"This order is a good first step, but it has loopholes in it," warns author Jefferson Morley, whose website, jfkfacts.org, says it seeks to "abolish the official secrecy" that surrounds the 1963 assassination.

Millions of documents related to the 1963 assassination of President John F. Kennedy in Dallas have already been made public, but President Donald Trump has ordered the release of thousands of still-classified files.

"It is in the national interest to finally release all records related to these assassinations without delay."