which us president has spent the most money including obama?

Based on total federal outlays reported by the White House, George W. Bush’s presidency had the largest spending with $19.1 trillion over 8 years.

Through 3 years of Barack Obama’s presidency, the federal government has spent $10.6 trillion. Projections for 2012 show that government spending for Obama’s full term in office will reach $14.4 trillion.

If Obama is elected for a second term, estimates project that he would have $30.4 trillion in spending over both terms.

Tuesday, March 06 2012
Source: http://www.whitehouse.gov/omb/budget/Historicals