Bishop Mark J. Seitz of El Paso, Texas, said he worries for families in which some members are U.S. citizens and others have a less permanent immigration status.
As the U.S. bishops were beginning their fall assembly in Baltimore, also marking their 100th anniversary as a conference, a couple of nonviolent protesters gathered nearby.
"We're at the beginning of this," said Gonzaga history teacher Ed Donnellan, who also is looking at the possibility of taking students to visit the remnants of the Jesuit slave plantations in Maryland.
At the 2017 gathering, organizers offered Catholic speakers that tackled racism, immigration, climate change, socioeconomic inequality, prison reform and other forms of social exclusion.