Pope Leo XIV on Tuesday strongly backed U.S. bishops who condemned the Trump administration's immigration crackdown and urged the American people to listen to them and treat migrants humanely.

History's first American Pope was asked about the "special message" the U.S. Conference of Catholic Bishops adopted during their general assembly last week.

The text criticized the Trump administration's mass deportation of illegal aliens and the "vilification" of them in the current immigration debate. It lamented the fear and anxiety immigration raids have sown in communities, and the denial of pastoral care to illegals in detention centers.

Leo, who has previously urged local bishops to take the lead on speaking out on matters of social justice, said he appreciated the U.S. bishops statement and urged Catholics and all people of goodwill to listen to what they said.

"I think we have to look for ways of treating people humanely, treating people with the dignity that they have," said the Chicago-born Leo.

"If people are in the United States illegally, there are ways to treat that. There are courts; there's a system of justice."

Speaking to reporters as he left the papal country house south of Rome, Leo acknowledged there are problems in the U.S. immigration system. But he stressed that no one has said the U.S. should have open borders, and that every country has the right to determine who can enter and how.

"But when people are living good lives — and many of them for 10, 15, 20 years — to treat them in a way that is extremely disrespectful, to say the least — and there's been some violence, unfortunately — I think that the bishops have been very clear in what they said," he said.

"I would just invite all people in the United States to listen to them."

The bishops' "special message" was rare — the first time since 2013 the bishops had penned such a single-issue statement at one of their meetings. It was accompanied by an Instagram video of individual bishops reading the text on camera.