Both my parents were immigrants. I grew up in a working class suburb of Detroit where every family seemed to include at least one parent or grandparent who was an immigrant, from places all over the world including Mexico, Syria, and Iraq. So of course I admire and respect immigrants, as we all should, because every American is either an immigrant or the descendent of ancestors who came here from somewhere else. And we are told that even includes Native Americans. Whether we should admire and respect immigrants is not what the immigration controversy is really about. Given that we should admire and respect immigrants, the question at the heart of the controversy is, how many should we take? And specifically, should we accept everyone in the world who wants to come to the United States to live and work? Or alternatively, should we try to enforce a numerical limit on how many immigrants we accept every year? That is a binary choice, either no limits, or an enforced limit. And it is a hard choice, …