For though the majority of immigrants and illegals comes to work, and work hard, most now come from Third World countries and do not bring the academic or professional skills of European-Americans.
Third, the decline in academic test scores here at home and in international competition is likely to continue, as more and more of the children taking those tests will be African-American and Hispanic. For though we have spent trillions over four decades, we have failed to close the racial gap in education. White and Asian children continue to outscore black and Hispanic children.
Can the test-score gap be closed? With the Hispanic illegitimacy rate at 51 percent and the black rate having risen to 71 percent, how can their children conceivably arrive at school ready to compete?
Should this continue for three decades, what will it mean for America if Asians and whites occupy the knowledge-industry jobs, while scores of millions of black and Hispanic workers are relegated to low-paying service-sector jobs? Will that make for social tranquility?
Affirmative action is one answer. But this is already causing a severe backlash, and the reason is obvious.
When affirmative action was first imposed, whites outnumbered blacks nine to one. The burden of reverse discrimination on the white community was thus relatively light. Today, however, not only blacks, but Hispanics and women -- two-thirds of the entire population -- qualify for affirmative action in hiring and school admissions.
And the burden falls almost entirely on white males, who are one-third of the country but three-fourths of the dead and wounded coming back from Afghanistan.
Sociologist Robert Putnam, author of "Bowling Alone," has also found that the greater the racial and ethnic diversity in a community, the less social capital there is -- i.e., people in diverse settings are far less disposed to cooperate for social goals. They retreat into enclaves of their own kind.
Putnam found social capital at the lowest level he ever measured in Los Angeles, the most diverse community on earth. Yet, by 2042, the demography of every American city will approximate that of L.A.
What is happening to America is happening across the West.
Can Western civilization survive the passing of the European peoples whose ancestors created it and their replacement by Third World immigrants? Probably not, for the new arrivals seem uninterested in preserving the old culture they have found.
Those who hold the white race responsible for the mortal sins of mankind -- slavery, racism, imperialism, genocide -- may welcome its departure from history. Those who believe that the civilization that came out of Jerusalem, Athens, Rome and London to be the crowning achievement of mankind will mourn its passing.