A bit more context will show that the Pope is not talking about walls along a nation’s border or around a house or vault or whatever. In his remarks, he didn’t mention Trump or the USA or Mexico. He’s talking about the Christian community (the Church):
“In these cases, the closeness and warmth of all the Church must be even more intense and loving, and must assume the exquisite form of compassion, which is not forbearance: compassion means to suffer with others, to be close to those who suffer, with a word, a caress, that comes from the heart: this is compassion, for those who are in need of comfort and consolation. This is more important than ever: Christian hope cannot dispense with genuine and concrete charity. The same Apostle of the people, in his Letter to the Romans, affirms with his heart in his hand, ‘We who are strong – who have faith and hope, and do not have many difficulties – have an obligation to bear with the failings of the weak, and not to please ourselves’ (15,1). This witness does not then remain closed within the confines of the Christian community: it resonates with all its vigour well beyond, in the social and civil context, as an appeal not to create bridges, not walls; not to repay evil with evil, but to conquer evil with good and offence with forgiveness – the Christian can never say, you will pay for this! – offence is conquered with forgiveness, and to live in peace with all. This is the Church! And this is what Christian hope does, when it takes on the strong and at the same time tender features of love. Love is strong and tender”.
Looks like a mistaken translation with the “not to create bridges” but…anyway, here’s the source:
press.vatican.va/content/salastampa/en/bollettino/pubblico/2017/02/08/170208a.html
Dan