Amiram Nir: He was a former Israeli agent who was in Jerusalem with George Bush during Iran Contra. He went under the assumed name of Pat Weber. Nir was scheduled to testify to the Senate subcommittee and it was feared he would reveal the truth. He perished when his aircraft was shot down with missiles from the helicopter of a man called Gene Tatum, 25-year CIA deep cover agent.
Senator John Tower: He was appointed by the Reagan/Bush Administration to chair the bipartisan committee to investigate the Iran/Contra scandals. He directed the Tower Report and had all the Iran Contra documents that told the real story. He was killed in an airplane crash later in Georgia in 1991.
Steve Kangas: His web site, Liberalism Resurgent, was meticulously researched and presented such a problem to the "real boss" of George Bush, Richard Scaife, that he hired a private detective to look into Kangas' past. Steve Kangas was found in a 39th-floor bathroom outside of Scaife's offices at One Oxford Centre, in Pittsburgh, an apparent suicide. Mr. Kangas, a very prolific writer, left no note. He had brought a fully-packed suitcase of clothes with him to Pittsburgh. He bought a burglar alarm shortly before he left for Pittsburgh. Why did he need a burglar alarm if he was going to commit suicide? An avowed advocate of gun control, he nevertheless bought a gun. What was he afraid of? Why did he go to Pittsburgh? After his death, his computer was sold for $150 and its hard drive wiped clean. Everything in his apartment was thrown away.
James Hatfield: Mr. Hatfield was the author of Fortunate Son, an unauthorized biography of George W. Bush. The book detailed Bush's cocaine use and cover up of a cocaine arrest. He was found Wednesday, July 18, in a motel room, an apparent suicide.
George de Mohrenschildt: A rich Russian oilman, he was described with his wife as being the two people friendliest to Oswald at the time of the assassination. De Mohrenschildt was the man who moved Oswald to Dallas. In the late 1970's, shortly before the first meeting of the House Select Committee on Assassinations, de Mohrenschildt started seeing a new doctor in town. He quickly became mentally unstable, at which time his wife convinced him to stop seeing the doctor. They moved away and left a false forwarding address. On the same day that the Committee tried to contact him about testifying, he was found dead of a gunshot wound. In his personal address book was the entry Bush, George H.W. (Poppy) and Zapata Petroleum Midland (the oil company owned by George H.W. Bush).
Danny Casolaro: He was working on a book that tied together the scandals surrounding the presidency of George H. W. Bush. He told his friends he was going to "bring back" the head of the Octopus. Instead, his body was found in a hotel in Martinsburg, West Virginia, on August 10, 1991, an apparent suicide.
Lars Erik Nelson (no specific link, but the timing is interesting): Lars-Erik Nelson was a reporter for the New York Daily News and a constant critic of George Bush throughout the 2000 Presidential campaign. He wrote a series of articles on how Bush was trying to steal the Florida election. Found dead in his living room of an apparent stroke on November 21, 2000, the very day that Bush lawyers were making their arguments before the Florida Supreme Court.
Henry B. Gonzalez: Henry Gonzalez, former Congressman from Texas, was the Chairman of the House Banking Committee during the Reagan and Bush years. He oversaw hearings on the S&L fiasco which nailed Neil Bush, and tried to have both Reagan and George Bush impeached. In a speech before Congress on July 27, 1992, Gonzalez revealed that George Bush signed a top secret National Security Decision directive, known as NSD 26, ordering closer ties with Saddam Hussein and Iraq. Henry Gonzalez died of unknown causes on November 27, 2000.