Clickbait.
Congress does NOT admit UFOs are aliens or any such nonsense. What they say is clear. Once a UFO can be positively determined to be a manmade object it no longer a UFO and would be passed off to other appropriate agencies to investigate.
Temporary nonattributed objects, or those that are positively identified as man-made after analysis, will be passed to appropriate offices and should not be considered under the definition as unidentified aerospace-undersea phenomena
The article might as well claim that a ring and dash where you can't find the 10 year old kid who did it as being an proof that bigfoot exists.