Border controls are a basic human right – is it un-Christian to oppose mass immigration?

Is it sinful to be not so keen on the whole immigration thing? I suppose Justin Welby thinks so, according to his recent comments.

‘We have to be careful and you can’t over-burden the community, you have to be realistic about that but also we must never – part of the Christian, at the heart of Christian teaching about the human being is all human beings are of absolutely equal and infinite value and the language we use must reflect the value of the human being, and not treat immigration as just a deep menace that is somehow going to overwhelm a country that has coped with many waves of immigration and has usually done so with enormous success and it is part of the strength and brilliance of this country that we are so good at this, and I would hate to see us lose that tradition.’

I wonder what past immigration he’s talking about?