Is this appeal to reason? The book is called" The Immigrant Contribution

Immigration plainly was not always a happy experience. It was
hard on the newcomers, and hard as well on the communities to
which they came. When poor, ill-educated and frightened people
disembarked in a strange land, they often fell prey to native
racketeers, unscrupulous businessmen and cynical politicians. Boss
Tweed said, characteristically, in defense of his own depredations in
New York in the 1870’s, “This population is too hopelessly split into
races and factions to govern it under universal suffrage, except by bribery of patronage, or corruption.” But the very problems of adjustment and assimilation presented a challenge to the American idea—a challenge which subjected that
idea to stern testing and eventually brought out the best qualities
in American society.