I don't know about the US, but at least in Canada, permanent residents have the same right of entry as Canadian citizens. Revoking permanent residency is (to ov

I don't know about the US, but at least in Canada, permanent residents have the same right of entry as Canadian citizens. Revoking permanent residency is (to oversimplify things a bit) not up to discretion either; rather, it is governed by laws defining the precise conditions that must be met in order for permanent residency to be revocable. In Australia, permanent residency is a type of visa. I imagine that's what they are talking about.