America's core culture has primarily been the culture of the seventeenth and eighteenth century settlers who founded our nation. The central elements of that culture are the Christian religion; Protestant values, including individualism, the work ethic, and moralism; the English language; British traditions of law, justice, and limits on government power; and a legacy of European art, literature, and philosophy. Out of this culture the early settlers formulated the American Creed, with its principles of liberty, equality, human rights, representative government, and private property. Subsequent generations of immigrants were assimilated into the culture of the founding settlers and modified it, but did not change it fundamentally. It was, after all, Anglo Protestant culture, values, institutions, and the opportunities they created that attracted more immigrants to America than to all the rest of the world.
America was founded as a Protestant society, and for 200 years almost all Americans practiced Protestantism. With substantial Catholic immigration, first from Germany and Ireland and then Italy and Poland, the proportion of Protestants declined to about 60 percent of the population by 2000. Protestant beliefs, values, and assumptions, however, have been the core element (along with the English language) of America's settler culture, and they continue to pervade and shape American life, society, and thought. Protestant values have shaped American attitudes toward private and public morality, economic activity, government, and public policy. They have even deeply influenced Catholicism and other religions in America.
Throughout our history, people who were not white, Anglo-Saxon Protestants have become Americans by adopting America's Anglo-Protestant culture and political values. This benefited them, and it benefited the country. Millions of immigrants and their children achieved wealth, power, and stares in American society precisely because they assimilated themselves into the prevailing culture.
One has only to ask: Would America be the America it is today if in the seventeenth and eighteenth centuries it had been settled not by British Protestants but by French, Spanish, or Portuguese Catholics? The answer is no. It would not be America; it would be Quebec, Mexico, or Brazil.
The unfolding of British Protestant culture in America didn't just happen; it was orchestrated by our founders. As immigrants poured in during the late eighteenth century, our forefathers saw the need to "make Americans" of the new arrivals on their shores. "We must," John Jay said in 1797, "see our people more Americanized." At the peak of this effort in 1919, Justice Louis Brandeis declared that Americanization meant the immigrant "adopts the clothes, the manners, and the customs generally prevailing here ... substitutes for his mother tongue the English language," ensures that "his interests and affections have become deeply rooted here," and comes "into complete harmony with our ideals and aspirations." When he has done all this, the new arrival will have "the national consciousness of an American." The acquisition of American citizenship, the renunciation of foreign allegiances, and the rejection of dual loyalties and nationalities are key components of this process.
During the decades before World War I, the huge wave of immigrants flooding into America generated a major social movement devoted to Americanizing these new arrivals. It involved local, state, and national governments, private organizations, and businesses. Americanization became a key element in the Progressive phase of American politics, and was promoted by Theodore Roosevelt, Woodrow Wilson, and other leaders.
Industrial corporations established schools at their factories to train immigrants in the English language and American values. In almost every city with a significant immigrant population the chamber of commerce had an Americanization program. …