nope, i'm just asking why you think that the moral argument should be ignored, and why that position is obvious. we're talking about a group of humans and what laws and regulations will apply to their lives, likely radically changing them. these decisions will affect their relatives, who may or may not be in similar positions themselves. when legislating about persons, it seems there is always some relevance as to how the laws will affect those people's lives, even if broader considerations (value to us/cost to us as a country) are also relevant.
to be clear, i'm NOT saying you're wrong. I'm asking you why you think you're right, particularly since its so obvious.
EDIT: i totally appreciate i jumped in mid-conversation and asked a question which is now a chain and that might come off as odd to you, so sorry -- you asked about my point -- fair question, I'm not sure I really have one other than understanding your point of view. perhaps silly, but thought you made an interesting point and wanted to see how you thought through the issue before you made it. a "non-expert" can't tell anyone they're wrong, can only try to learn why others think they are right :).
So from my point of view the moral argument is as I stated it earlier: We either should or should not allow immigrants because of moral laws. This argument is stupid because it is not based on consequences or information.
Your point seems to be that the consequentialist point of view should take into account the impact on immigrants, which is different than what I meant by the moral argument. I'm pretty sure I agree with yours. A country is made up out of people. The costs/benefits to those people are a subset of the costs/benefits to a country, and should be factored into same.
As Multiheaded added, "Personal is Political" stuff like gender relations, etc also may belong here.