According to previous papal teaching, a Catholic confessional state is the ideal, even if in most modern situations it’s not a practical possibility, and prudence would steer us away from it. That teaching continues to be normative for Catholics.
For Socrates, the city isn’t only an arbitrarily chosen device for illuminating the soul’s mysteries but an essential means for creating and sustaining justice and the other virtues in the soul.
On Thomistic principles, Trump’s ban on Syrian refugees whose lives are in danger is not morally justifiable. Bans on other travelers and immigrants, however, are not as problematic.
Is there a moral obligation for the US not to enact Donald Trump’s proposed ban on Muslim travel into the US?