America as an Immigrant Nation

"In the United States, the strength of the nation comes from the immense multiplicity of ethnic groups.  Moreover, it hinges upon the existence of conditions that permit dissimilar groups to act and live together.  The resulting mutual fusion and interdependency help integrate the nation....Thus, at the heart of American history lies the cycle of national-creation and recreation through immigration...The mutual assimilation of immigrants, their need to establish interdependency with surrounding groups, and their vision of American democracy as the best haven for cultural pluralism probably ensure that voluntary and fluid identities will continue to make immigration a nationalizing experience"
                                     Reed Ueda, The World & I (1992)