The USAF simply needs to be forced to turn over fixed-wing close air support aircraft to the Army. Meaning Warthogs and anything similar. There is absolutely no good reason for allowing USAF to prevent this and it puts infantry at risk.
Trump should do this.
No, this creates costly duplication of facilities. Aircraft maintenance, air traffic control, etc.
What's needed is for it to be the case that air force generals get their fitness evaluations done by the theater commanders (who will generally NOT be air force) based on how well the commanders see the air force handling support. And have the theater commanders have a big voice on what kind of planes get bought.