FAIR: FAIR has just released its fiscal study of the cost of illegal immigration in Arizona which shows a dramatic rise over five years from $1.2 billion annually in 2005 to $2.7 billion annually in 2010. Based on FAIR's estimate of 500,000 illegal aliens residing in the state, the study adds their cost of education, Medicaid, SCHIP, incarceration, welfare and general categories. The study then subtracts revenue collected from them by property, sales and income tax to derive the net $2.7 billion illegal immigration is costing Arizona taxpayers.