NDAA 2012 and Posse Comitatus
https://www.aclu.org/other/talking-points-2012-national-defense-authorization-act-ndaa
Navy and Marines added by later EOs.
Coast Guard is the only branch not under the law, because they are considered law enforcement.
It didn't do away with PCA….but it gave POTUS much more power to use it…as did Obama's NDAA 2012