CUTTING IT IN HALF IS A GOOD START:

Last year, in 2012, the U.S. government spent about $841 billion on security--a figure that includes defense, intelligence, war appropriations, and foreign aid. At the same time, the government collected about $1.1 trillion in individual income taxes. (And about $2.4 trillion in revenues overall if you include payroll, corporate, estate, and excise taxes.) 

In other words, about 80 cents of every dollar collected in traditional federal income taxes went for security.  [...]

While the Simpson-Bowles Commission advocated over a trillion dollars in defense cuts, President Obama's budget would only reduce spending modestly, and even that's a hard sell on Capitol Hill. 

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