Sessions' rush to take their case to the Supremes is imprudent and will prove his undoing.  The Supremes will certainly demur until after the 9th's ruling is handed down -- and nobody should have any doubt as to what that ruling will be.  

So then Trump's DOJ will have a perfect .000 batting average with this EO, and Sessions wants the Court to settle the matter.  First, they have every reason not to grant cert because the two most dissimilar Circuit Courts will have ruled similarly against Trump.  Second, if they do decide to take this case AND if they find against the administration, Trump will be left with no recourse.  Sessions would be much more prudent to let this matter drop and avoid being stuck with an adverse ruling.

But prudence is hardly the hallmark of this administration.