If NASA was laundering money, wouldn't their budget be a lot goddamned bigger? Like 50% of the military's or some shit?
We'd have FIVE spacestations, two on the moon, an orbital asteroid mining facility making them, and two ships being built for Mars missions.
PLUS, NASA would not be a public agency, just in case some nerd might stumble across incriminating data.
Oh, and Trump would have defunded a space station to build his Wall.