Jesus sin Fronteras: who is "we"?

In some conversations I've had about illegal immigration, since I wrote that paper on it, I've been bothered by something. When people talk about the borders, they say "we" a lot. They say things like "we need to deport people" or "we have the right to maintain our borders." This is bothersome and puzzling for me because these people are Christians, what does we mean? If "we" is America then their statements might be true. But there's the problem; "we" for a Christian should not mean America, it should be the church. Our allegiance to God and to each other should be held at least a little higher than our allegiance to the state. Our identity should be in the church rather than in American society. This is a church that includes everyone, Mexican and American. If my allegiance is to God and to the church, then I cannot deport my brother into dehumanizing poverty. I cannot split up my sister's family because the state says she doesn't belong. The church has no borders. As Christians the very idea of a border should puzzle us. It is the same with military action, corporate oppression, and maximization of profit. These are all things that seem essential to American Society. May we come out from her (Revelation 18:4) however "impractical" it may seem. May we always remember that we were aliens once (Leviticus 19:34). And may our "we" always be the church, not the American Nation-state. May our "we" include immigrants and all those who are "illegal" and unwanted.

disagree if you want, but please don't write me off because I'm "leftist" or something. I hope I'm not just a liberal, I hope that I actually care.