No problem, I was just about to correct our friend, but you jumped in. Thanks.
Honestly, I’ve yet to hear any legitimate defense of immigration restriction, so I would turn the question back around to the OP: “laws against immigration: How can anyone defend this conservative viewpoint?”
The closest I’ve heard is “welfare state/entitlements means people will come to take advantage”. Which is a legit concern. But a) the very reason we instituted those “entitlements” is that we as a society care about the well being of less fortunate strangers. So it is pretty racist/xenophobic/misanthropic/shitty to say “except for those people”. You either care or you don’t. Pick one. I’d prefer to eliminate welfare entirely if the alternative is outlawing the basic human right to move.
But fortunately, that isn’t the alternative. Because b) we maintain those welfare payments and entitlements by asking the working class to pay. Workers pay for the welfare that those who can’t work accept. So more workers = more people paying into the pot = the ability to support more people on welfare. This is a “problem” that fixes itself. People are an economic resource. They work, they build things, they create our economy. The resistance to immigration is based on the misguided assumption that those who were born in foreign countries are all takers, while God-fearing American-born humans are the only hard-working people on earth. This is bullshit, to say the least.
Finally, nobody who is against immigration admits the fact that every single one of their arguments applies to having children, or to people moving from New York to California. Our population grows. Whether it grows because Teenage Johnny got his first job, or because Dad packed up his family and moved to Iowa, or because Muhammad from Iraq started driving a taxi in New York, doesn’t really make any difference.
So you have three options: Either foreign born people are inferior by nature (they don’t even have the skills of an American born 16-year-old, and never will, so therefore are really more like a hospital full of invalids, who always take resources and never give back), they are inferior by practice (Muslims and Mexicans believe icky old things and we shouldn’t allow those beliefs in our country, and they dress weird and smell funny and eat ugly food and that shouldn’t be allowed), or you agree with me that people are people and it doesn’t matter if they came from New York, New South Wales, New Guinea or a new mom’s uterus, they should be treated the same.
Now I can make an exception for known criminals fleeing the law or something, but not “you have the same color skin as a terrorist and speak the same language”, anymore than I would ban Oklahomans from moving because they all speak English and look like Timothy McVeigh.