One quibble is that the "Muslim Ban" doesn't have majority support.  It has 40% support.  Of course, it is still scary that 40% of people support it but it isn't majority.  I suspect that now that people have seen what the ban entails and who is exactly affected by it that people are able the empathize with the victims.  It is easy to support a ban hypothetically but much harder when you see that it involves real, innocent people.