The Immigration Equation - New York Times

The Immigration Equation: “The puzzle is this: how is the U.S. able to absorb its immigrants so easily? After all, 21 million immigrants, about 15 percent of the labor force, hold jobs in the U.S., but the country has nothing close to that many unemployed. (The actual number is only seven million.) So the majority of immigrants can’t literally have ‘taken’ jobs; they must be doing jobs that wouldn’t have existed had the immigrants not been here.”