Brazilian presidential hopeful Aldo Rebelo claims to know the contents of US UFO files and pledges to reveal them if elected, raising questions about government transparency and alien disclosure.

Related: 18 Of The "Biggest Historical Lies" People Somehow Still Believe Despite Evidence To The Contrary ...

Claims surface that Donald Trump was secretly briefed on Greys, Nordics and human hybrid aliens, but no official proof confirms it.

Past classified reviews looking for alien life have found stranger things about life in Washington.