You might want to check
http://en.wikipedia.org/wiki/United_...federal_budget
Your 30 cents figure is actually grossly erroneous.
Medicare + Medicaid = 19% of spending
Social Security = 20% of spending
Defense = 23% of spending
Government Salaries are covered in Other Mandatory Spending and represent a portion of a category that covers 17% of spending.
So your 70 cent figure is actually more like 10 cents on the dollar, and your 30 cents figure is more like 90 cents on the dollar.