Judge Watson ruled the government could not work on an extreme vetting program. 
The 9th Circuit Court of Appeals vacated Watson's ruling.  The Appeals court said, "The district court did err in enjoining the entirety of Sections 2 and 6,  particularly the portions that pertain to interagency review, despite the Government’s requests for clarification and requests to narrow the injunction to enjoin conduct that actually harms Plaintiffs. The district court abused its discretion in enjoining inward-facing agency conduct because enjoining this conduct would not remedy the harms asserted by Plaintiffs. Further, the district court abused its discretion in enjoining the President. We would not be able to affirm in full the preliminary injunction even if Plaintiffs were also likely to succeed on their constitutional claims, for reasons that enjoining internal review  procedures does not remedy harms to Plaintiffs and because it is improper to enjoin the President without necessity."