CMU seems like the wrong target here. Somebody needs to fund research. I think what you really want is for Congress to give less money to DoD and more to NSF &etc. Professors will just chase the money like kids on a peewee soccer team after the ball, wherever it comes from. As do we all.
DoE might be good also, for climate work. (Though, keep in mind that a lot of nuclear weapons stuff is actually DoE.)
NIH is less useful, unless researchers want to pivot into biomed somehow.
As an alum, if the students don't love it, they can withdraw. Someone needs to foot the bill for research and education and CMU does not have a large endowment fund
DoE might be good also, for climate work. (Though, keep in mind that a lot of nuclear weapons stuff is actually DoE.)
NIH is less useful, unless researchers want to pivot into biomed somehow.
Not sure what else there is.