Mostly because it sounds like it was written by
evil stupid racist Steve Sailer:
Three years ago, ETS — the people who administer the SAT — released an alarming study. It combined information on test scores with demographic trends to predict that the U.S. work force of 2030 would be less literate, less skilled and worse paid than the U.S. work force of 1990.
One word: Immigration.
Since 1970, America’s largest source of immigrants has been Latin America, especially Mexico. More than half of these Latino immigrants lack a high school diploma. (…)
Many Americans carry in their minds a family memory of upward mobility…This story no longer holds true for the largest single U.S. immigrant group, Mexican-Americans.
… third-generation Mexican-Americans were no more likely to finish high school than second-generation Mexican-Americans. Fourth-generation Mexican-Americans did no better than third.