This is the Q&A from the news conference. It's pretty clear the Pope doesn't know anything about Trump and is just responding to the question.
Quote:
Phil Pullella, Reuters: Today, you spoke very eloquently about the problems of immigration. On the other side of the border, there is a very tough electoral battle. One of the candidates for the White House, Republican Donald Trump, in an interview recently said that you are a political man and he even said that you are a pawn, an instrument of the Mexican government for migration politics. Trump said that if he’s elected, he wants to build 2,500 kilometers of wall along the border. He wants to deport 11 million illegal immigrants, separating families, etcetera. I would like to ask you, what do you think of these accusations against you and if a North American Catholic can vote for a person like this?
Pope Francis: Thank God he said I was a politician because Aristotle defined the human person as 'animal politicus.' At least I am a human person. As to whether I am a pawn, well, maybe, I don't know. I'll leave that up to your judgment and that of the people. And then, a person who thinks only about building walls, wherever they may be, and not building bridges, is not Christian. This is not in the Gospel. As far as what you said about whether I would advise to vote or not to vote, I am not going to get involved in that. I say only that this man is not Christian if he has said things like that. We must see if he said things in that way and in this I give the benefit of the doubt.
A very reasonable objection would be that the Pope should concentrate on Trump's statements and beliefs and whether they're consistent with the Christian Gospel, and refrain from calling Trump himself "not Christian". Thinking his answer is hypocritical because the Vatican has walls is just stupid.