The G-men kept tabs on Steve Jobs, Whitney Houston, George Steinbrenner, John Denver, and many other well-known celebrities. Read on for the security secrets of more than a dozen American icons.

Steve Jobs

In 1991, the FBI conducted a background check on Jobs when he was considered for an appointment on president George H.W. Bush’s Export Council. According to the file, “several individuals questions Jobs’ honesty, stating that [he] will twist the truth and distort reality in order to achieve his goals.” In the report, the Apple CEO, who died in 2011, admitted to experimenting with LSD in his teens, calling his use “a positive life changing experience.” This is how you can earn someone’s trust, according to an FBI agent.

Whitney Houston

The dirt in Houston’s FBI file, opened in 1988, pales in comparison to her very public troubles with drugs, relationships, and money. The report details an investigation into threatening letters, including a batch of 79 love letters written to Houston by a Vermont superfan, cassette tapes from the Netherlands, and an alleged $250,000 extortion attempt by a friend of Houston’s who threatened to reveal personal details about the singer’s relationship with Bobby Brown. Check out these 11 mind-blowing facts you never knew about the FBI.

George Steinbrenner

Best known as the cranky owner of the New York Yankees, Steinbrenner had an extensive FBI file dating back to 1986. The thick files detail Steinbrenner’s illegal contributions to Richard Nixon’s re-election campaign (he pleaded guilty and was fined $15,000) and his appeal for pardon from the charge. He got part of what he wanted in 1989: As one of the last acts of his presidency, Reagan pardoned him of the charges, but the Yankees had an abysmal year, finishing in fifth place in the American League.