The concern in some quarters that too many immigrants will change the character of the united states is age old. The United States for an extended period has been a nation of immigrants, and the country has a long history of successfully absorbing people from Asia, Africa, Latin America, and the Caribbean. Today, the 41 million people in the U.S. representing 13.1 percent of the U.S. population are immigrants. The successful integration of immigrants and their children had contributed to the economic vitality and towards a vibrant and ever-changing culture in the U.S.