All native-born Americans, directly or indirectly, have the advantage of our schools, our colleges, and our religious bodies. It is our belief that America could not otherwise exist. Faith in mankind is in no wise inconsistent with a requirement for trained citizenship, both for men and women. No civilization can exist without a background-an active community of interest, a common aspiration-spiritual, social, and economic. It is a duty our country owes itself to require of all those aliens who come here that they have a background not inconsistent with American institutions.