Most of those things a tiny rounding error. Interest and social services are the only thing the government actually spends money on.
Like, sure, 600million for a ballroom is small compared to the annual interest payments but it could fund, dunno, at least a dozen scientists. Maybe even 2 dozen! Add in the 1.6 billion dollars trumo was trying to embezzle from the irs and we could get a couple dozen more studies going.
If that number is too small and trifling for you, how about the $80+ billion dollar budget for ice? Think we could afford a few studies with that?