"Dirtier than the dogs of Constantinople." "Waves of human scum thrown upon our beaches by other countries." Such was the vitriolic abuse directed against immigrant groups in Chile and Argentina early in the twentieth century. Yet only twenty-five years earlier, immigrants had encountered a warm welcome. This dramatic change in attitudes during the quarter century preceding World War I is the subject of Carl Solberg's study. He examines in detail the responses of native-born writers and politicians to immigration, pointing out both the similarities and the significant differences between...