First of all, Bush was Director of the CIA before he was VP, which is bad enough by itself. (Operation Condor, etc.) Bush was also close to Bill Casey (mentioned in the article), who ran Reagan's campaign, recruited Bush for the ticket, and became Reagan's Director of the CIA. Bush and Casey were both knee deep in Iran-Contra, a massive subversion of democracy and constitutional crisis in which the Reagan administration disobeyed an act of Congress. When Bush left office, he pardoned a bunch of Iran-Contra conspirators, thus covering his own ass too.