And speaking of the DEA

[Darlene] Novinger was recruited by the FBI in 1979 to work as an undercover operative, and in 1982 was assigned to Atlanta by the Federal Strike Force. She worked on Operation Nimbus, investigating large-scale drug smuggling on the Eastern seaboard. The investigation revealed the narcotics operation of a powerful Lebanese family living in Miami and Jamaica, which was also tied to the Lebanese fascist Phalange. And Novinger claimed the operation implicated Vice President Bush and his son Jeb.

Perhaps this is what Bush meant when, at the end of his debate with Michael Dukakis in 1988, he said "I've unleashed the Bush family on America."

After submitting her report, orders came to cease the investigation and destroy all documents. She said someone in the FBI's Miami office leaked to the traffickers that she had penetrated the operation. Before Operation Nimbus was shut down, veteran US Customs investigator Joe Price filed corroborating reports in September 1983 implicating Bush. And after he did, FBI agents arrested him on a narcotics trafficking charge.

Rodney Stich tells more, in his book Defrauding America:

Darlene Novinger said to me that she discovered during an FBI investigation that George Bush and two of his sons were using drugs and prostitutes in a Florida hotel while Bush was Vice President. She said that when she reported these findings to her FBI supervisors they warned her not to reveal what she had discovered. Novinger had been requested to infiltrate drug trafficking operations in South America and the United States. She was pressured to quit her FBI position; her husband was beaten to death; and four hours after she appeared on a July 1993 talk show describing her findings (after she was warned not to appear), her father mysteriously died. A dead white canary was left on his grave as a warning to her. After receiving death threats she went into hiding, from where she occasionally appeared as guest on talk shows, and called me from undisclosed locations.

Darlene Novinger died of cancer in January, 2003.

  Rigorous Intuition post

And two of his sons.