George W. Bush costs the federal government the most money out of all of the ex-presidents, according to a report by the Congressional Research Service.
The CRS reports that the government spent almost $3.7 million on ex-presidents in 2012, which includes pensions, staff and office costs and travel.
The costliest former president? George W. Bush, who clocked in at just over $1.3 million. That includes almost $400,000 for 8,000 square feet of office space and $85,000 in telephone costs.
President Bill Clinton came in second at just under $1 million, followed by George H.W. Bush at nearly $850,000. Costs for Jimmy Carter, the only other living former president, came in at about $500,000.