California has a housing crisis across the board. NIMBYism and city zoning practices are artificially preserving neighborhoods with expensive, single family homes over what is actually needed: multi-family condos and apartments, combined with brand new social housing projects and homeless shelters.
This is a good start, but a lot more needs to be done.
It's not that simple; A court must rule that the action in question is an "official act". As the SCOTUS intentionally declined to elaborate further on how this is defined, it will be up for the courts to decide what is and what is not covered by immunity.
Not that this couldn't become subject to abuse and partisan rulings, but it's more than just the presidental equivalent of