Fannie Mae-No Politics (FNMA)

[LuLeVan]

I think another problem with the cash out now theory is that if the NWS is subsequently vacated by any court for any reason than would the government be liable for potentially billions?

As snail-slow as the courts work, this would take years, and by then another admin would be in office.

Isn't it a violation of the Separation of Powers for a POTUS to spend $100B on his own latest pet project?

Only after the court decision, see above. By then, Biden will have long since retired.

If JB sets up a $100B affordable housing plan, couldn't a subsequent administration dismantle it?

In principle, yes, but the new government cannot recoup the money that has already been spent on affordable housing. When it comes to spending money, Biden is often faster than expected.