American Catholics deserve moral clarity regarding the ongoing immigration crisis. Unfortunately, the United States Conference of Catholic Bishops’ amicus brief in Trump v Barbara this week failed to give them that.

The brief categorised ending birthright citizenship as an immoral attack on human dignity and so reduced a complicated moral and political issue to an incoherent emotional appeal. It also excluded or misinterpreted key Catholic teachings regarding the obligations of citizens, national leaders and immigrants. It was not even written by a Catholic.