@revelette1,
This is being reported as a "nationwide" ban, but I don't believe that's accurate (I could be wrong).
This is similar to the case where a gay judge held a California law regarding gay marriage to be "unconstitutional."
Anything that is in fact "unconstitutional" is, of course, prohibited "nationwide."
That said, the mere fact that one judge in one court, in one federal district, finds something to be unconstitutional does NOT create a binding ruling "nationwide." Of course, if the U.S. Supreme Court ultimately upheld the lower court's ruling, THEN (but only then) it would be binding "nationwide."
Until such time, the ruling is only applicable to the district where the court is located (Seattle , Washinton, in this case).