They want it off their budget. Let the Army or the Marines pay for it. It's part of their mission.
The original Key West agreement of 1948 identified CAS as an Air Force responsibility.
https://en.wikipedia.org/wiki/Key_West_Agreement
The Army totally got out of the fixed wing business in 1967, while rotary wing CAS and logistics became an Army function.
https://en.wikipedia.org/wiki/Johnson-McConnell_agreement_of_1966
The bottom line is that fixed wing can do a lot that rotary cannot, and it’s the Air Force’s job. The A-10 is pretty damn good at it, and pushback from the Army should be expected.
Army. Treat it like a fast helicopter.
Marine craft need to be able to operate off of ships.