 He was later given the nickname "The Teflon Don" after three high-profile trials in the 1980s resulted in his acquittal, though it was later revealed that the trials had been tainted by jury tampering, juror misconduct, and witness intimidation.Law enforcement authorities continued gathering evidence against Gotti that helped lead to his downfall.According to Sammy Gravano, Gotti earned between $5–20 million per year during his tenure as Gambino boss.