Although Arafat lived a modest lifestyle, Dennis Ross, former Middle East negotiator for Presidents George H.W. Bush and Bill Clinton, stated that Arafat's "walking-around money" financed a vast patronage system known as neopatrimonialism. According to Salam Fayyad—a former World Bank official whom Arafat appointed Finance Minister of the PNA in 2002—Arafat's commodity monopolies could accurately be seen as gouging his own people, "especially in Gaza which is poorer, which is something that is totally unacceptable and immoral." Fayyad claims that Arafat used $20 million from public funds to pay the leadership of the PNA security forces (the Preventive Security Service) alone.