BTW, I think the Office of Public and Indian Housing has already been ruled unconstitutional by Bono v. Atlasia II. All of the ethnicity-based public services were ruled unconstitutional then, IIRC.
Close but not quite. The court ruled that the programs administered (under chapter 8 of title 42) had an impermissible means test, but it didn't order the bureaucracy thereof be dismantled, nor did it rule on whether such programs would be constitutional absent such a test. After all it would be quite conceivable for the Senate to revive the programs by removing the means test, it merely hasn't done so. Thus we've been paying for bureaucrats to twiddle their thumbs until the Senate decided what to do.