This article is insanely hypocritical. The African American population is by far and away the group that brings down the non-immigrant statistics. The same liberals who want to rag on "Americans" as a whole, would never put the spotlight on the fact that groups like African Americans and Native Americans severely hinder the "numbers" referred to. And who is largely responsible for the degradation of these sub-groups of society? Ding Ding Ding! You guessed it. Big Government and social welfare.
Bret Stephens is a self proclaimed conservative whose politics are middle of the road or, at times, independent. But the err is the same. You can't expect me to respect your opinion when you leave out glaring pieces of the puzzle.
All that being said, I agree that immigration is one of the pillars of America. The author makes a lot of good points but again he does a very poor job being unbiased. He uses facts about immigrants that jostle back and forth between referring to illegal immigrants and all immigrants - there is a huge difference!