http://www.nber.org/papers/w23885

During the period 1929-34 a campaign forcing the repatriation of Mexicans and Mexican Americans was carried out in the U.S. by states and local authorities. The claim of politicians at the time was that repatriations would reduce local unemployment and give jobs to Americans, alleviating the local effects of the Great Depression. This paper uses this episode to examine the consequences of Mexican repatriations on labor market outcomes of natives. Analyzing 893 cities using full count decennial Census data in the period 1930-40, we find that repatriation of Mexicans was associated with small decreases in native employment and increases in native unemployment. These results are robust to the inclusion of many controls. We then apply an instrumental variable strategy based on the differential size of Mexican communities in 1930, as well as a matching method, to estimate a causal "average treatment effect." Confirming the OLS regressions, the causal estimates do not support the claim that repatriations had any expansionary effects on native employment, but suggest instead that they had no effect on, or possibly depressed, their employment and wages.

Raj Chetty course online

http://www.equality-of-opportunity.org/bigdatacourse/

Girls who code

https://girlswhocode.com/

https://www.brookings.edu/blog/the-avenue/2017/09/14/segregation-and-changing-populations-shape-regions-politics/Evidence shows that immigration has benefited the Rust Belt demographically and economically. A steady stream of immigrants from Mexico, Central America, Asia, Africa, and the Middle East—a very different immigrant population than the Europeans who settled in the Midwest beginning more than 150 years ago—has slowed the hollowing out of the region’s bigger cities and small factory towns in recent decades. In most of the Midwest today, immigrants are a major source—and in some communities the only source—of population and new business growth. According to the Chicago Council on Global Affairs, from 2000 to 2015, non-native born populations in Midwest metros grew 34 percent (more than 1 million people), and accounted for 37 percent of all Midwest communities’ population growth. From Racine and Janesville, Wis. in the west, to Akron, Ohio and Erie, Pa. in the east, growth in immigrant populations has compensated for losses or outpaced modest growth of native-born populations.

https://twitter.com/Noahpinion/status/910952231913930753

1/As @bryan_caplan notes, trans-national adoption studies are a big blow to those who believe IQ is mostly genetic: