Here's another chart. I'm not sure what all is included in "Income Security" (and don't have the time to look it up right now) but it amounts to 5% of the national budget.

http://www.nationalpriorities.org/Proposed+Discretionary+Budget
edit:
Oops.. my bad. I was looking at discretionary spending. I wanted the total spending which includes mandatory spending as well:
It seems the mods need help with this forum. I have zero tolerance for trolling, platform criticism (Rule 4), and poster bad-mouthing (Rule 3.4) and you will be reported.
Review before posting: http://vgchartz.com/forum/rules.php







