FOIA request for the ‘no-fly’ list along with any determining criteria for people to be added to the list, and the official methods to appeal the appearance and ‘correct’ errors that may appear.
That is why this will never actually go into effect, as there’s few courts in the US who would deny such a request, and no courts of appeal which will uphold the government’s denial of releasing the list as it is being used to specifically determine who can and can’t exercise a basic right.
He has done a lot more in that area than he has on gun control.
0bama blocked investigations of anyone Islamic. The San Bernardino attack was not an intelligence failure it was a policy success of stopping investigations of terrorists in their tracks and deleting the case files.