This E.O. goes into effect Jan 1, 2019. We need a legal expert to weigh in on this topic. One did in the past, and they made a case that there is a period of about 30 days before this effective date that someone could be arrested and still have this E.O. apply.  But don't quote me on this, cuz I am writing this from memory, from a post last March 2018 on reddit Great Awakening which is now gone.