Hopefully the SC will uphold President Trump's travel ban. It is well within his powers.
None of the lower court judges have ever identified how the travel ban "makes a law respecting an establishment of religion, or prohibiting the free exercise thereof" for any U.S. citizen or person under U.S. jurisdiction. And most of their objections seem to amount to "That makes things hard on people", as though that somehow reduced the President's powers under US law.
It's as though the President tried to ban travel into the U.S. for anyone from Sweden, and some judge announced that since most people in Sweden are Caucasian, this was an unconstitutionally racist ban on white people entering, despite the fact that it also banned blacks from Sweden; and Indians, Hispanics etc. who are also citizens of Sweden. Therefore President Trump cannot ban people from Sweden from coming into the U.S.
The judges rejection of a ban on travel from the six countries Barack Obama listed as being dangerous in harboring terrorists, on grounds of religion or race, is just as silly as a ban on Swedes.