A UFO row erupts as US congressman claims an intelligence insider warned he could be killed for probing alien secrets, sparking renewed public debate.

Donald Trump said US agencies should release UFO records, but weeks later no files have surfaced and the Pentagon's review process appears to be moving at its usual glacial pace.

Donald Trump has ordered the release of files related to aliens, UAP, and UFOs. If previous disclosures are any indication, get ready for a letdown.