What was the significance of the Dillingham Commission's report in 1911?

The significance of the Dillingham Commission's report in 1911 lies in its reinforcement of nativist sentiment and its advocacy for immigration restrictions. The commission, established by Congress to study immigration patterns and their impacts on American society, produced a comprehensive report that ultimately portrayed immigrants, particularly those from Southern and Eastern Europe, as a threat to American labor, culture, and values.

The findings of the Dillingham Commission contributed to a growing belief among many Americans that immigration needed to be restricted to preserve the cultural integrity and economic stability of the United States. This report laid the groundwork for subsequent immigration laws, including the Emergency Quota Act of 1921 and the Immigration Act of 1924, both of which established strict quotas favoring Northern and Western European immigrants while heavily limiting those from other regions.

While other options mention various facets related to immigration, they do not capture the primary impact of the Dillingham Commission's report, which was its role in solidifying negative attitudes towards certain immigrant groups and promoting restrictionist policies.