Loislane, it is not illegal to seek asylum here. Let me ask you, could you stand in front of these poor people coming here in what is often a last ditch attempt to save the lives of them and their families, and tell them they had to go back? That they are not as deserving of safety, security or freedom as you are?
Does it make you unchristian? As an atheist I can't answer that from my own perspective but I can tell you that Jesus himself is considered to have been a refugee and there are bible passages prescribing the treatment of refugees, namely that you should not harm them and you should help them. So if you would have booted baby Jesus out and back to Egypt to face infant slaughter over your concerns for housing and jobs, yeah, I guess that makes you unchristian. Seriously, the biblical references on refugees are worth reading if it may help your perspective, and RobinSparkles posted a great link too, I hope you will read it and think on this some more.