Still, social/income security and healthcare (and education) should be the last places one should cut budgets.
Also, the US spends more in their military as a percentage of their GDP than any other developed nation. This sounds like an excellent place to cut. The US government subsidizes a lot of weapons research as well, for companies that'll later sell the tech the government helped them develop to foreign countries at a profit. I don't think it's fair to subsidize a private enterprise this way.