The policy is that SA is not used and the publication of the policy in all the places where SA is now referenced (like SARPS, MOPS, MASPS, etc) is just a matter of time, I understand.
If anything is done to the plain GPS signals you will find it in a NOTAM or at the U.S. Coast Guard Navigation Center web site or any of a bunch of other places.
Would be odd to use SA and at the same time allow WAAS, which has just finished it's I don't know how many 9's availability/goodness exercise to continue to operate and improve navigation solultions, and it is not run by the military folk.