Statues of limitations, record retention periods, all come into play.
Trump lied about deadly helicopter crash, president's former long-time employee saysSource."Donald Trump lied about almost being on a helicopter when it crashed and killed five people, a former Trump Organization official has said."
"Barbara Res, who was the company's vice-president of construction, told MSNBC the US president once fabricated a story that he decided at the last minute to avoid the 1989 flight."