the programs for olds are politically untouchable. Social Security and Medicare will be funded, even if they have to get rid of NASA, NOAA, the CDC, FEMA, the State Department and the Coast Guard to do it.
I love NASA but if keeping Social Security, Medicaid and Medicare meant getting rid of NASA, it'd be an easy decision. Now, the Defense Budget could definitely be reduced majorly. Not getting rid of the State Department--ridiculous--but I'm sure there's a lot of fat that could be trimmed from the defense establishment.