Boom.
To be honest, I can't find any Muslim ban. Trump tried to suspend immigration from 7 nations, until better vetting procedures could be put in to place. But the suspension was applicable for the citizens from these countries who belong to all the religions. Not like it was applicable only for the Muslims.
A judge did a clairvoyant mind-meld with Trump and determined the guy to be a racist, and that formed the basis for her ruling when she rejected his travel restrictions. That settles it.
I would be more down on Trump for neglecting Saudi Arabia where many 'terrorist' (aka, patsies) passed through, but it turns out that the main reason for this location of transit was that it was a convenient locale for the CIA to run these people through for a relatively long time period. Some state dept whistle-blower gave a pretty good interview on this. If Trump's team changes that (and I'm no holding my breath) then Saudi Arabia probably isn't excessively risky.