"Removing young people from their families is not going to have a positive effect on either the youngsters or their families", the pontiff said during a press conference on the return leg of a five-day Colombia trip. "If we don't go back, we will go down", the Pope said, CNN reports, as his papal plane crossed Hurricane Irma's path en route from Cartagena back to Rome.
"One hopes that it is re-thought somewhat", Francis said Sunday aboard the Papal plane in response to a question about the program, Reuters reported.
The Pope has already clashed with President Trump over immigration issues, such as the president's intention to build a wall on the border with Mexico and deport undocumented aliens.
A reporter questioned Francis regarding Trump's to repeal the DACA order, which the Pope refused to criticize directly.
While acknowledging that he had not been able to study the DACA decision in detail, Francis spoke about the challenges facing young immigrants more generally, saying that "to take away young people from their families is not something that bears fruit, neither for the young people nor for their families".
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Francis, known for his own simple and austere style, said Claver was "austere and charitable to the point of heroism".
If someone has doubts about man-made climate change, they must go to the scientists, and then make their decisions: "And history will judge the decisions". "Drugs, other addictions, suicides - youth suicides are very high - and this happens when they are torn from their roots", Francis said.
Pope Francis was asked about corruption, which can be even more devastating to a country than outright violence.
He then quoted a phrase from the Old Testament: "Man is stupid, a stubborn, blind man".
Francis said he did not fully understand the crisis in North Korea. The incident in Colombia is not, however, the first physical hiccup to have happened during one of his trips overseas. "I think what I see there is a fight for political interests".
Pope Francis has told Colombian Catholics that faith is not measured by how well they follow rules, but by the depth of their prayer life and the degree to which it pushes them to share the Gospel.
"Your repeated expressions about God's infinite mercy move me to plead your forgiveness for any tears and pain that we have caused the people of Colombia", Londono wrote.