Policies that involve criminalizing and detaining child migrants "are an insult to human dignity," the Vatican observer to U.N. said.
Tens of thousands of Haitians enrolled under the Temporary Protected Status program can stay in the United States until at least January.
The bishops' spring assembly will include discussions ranging from immigration to religious freedom, as well as the Synod of Bishops on youth.
The 9th U.S. Circuit Court of Appeals heard arguments for and against a revised version of Trump's executive order on immigration.