Must-Read: : The Labor Market Effects of a Refugee Wave: Applying the Synthetic Control Method to the Mariel Boatlift: "Workers with no high school degree... are the group competing most closely...
...in the labor market with the newly arrived. We compare Miami's labor market outcomes with those in a control group of cities chosen using the synthetic control method so as to match Miami's wages and other labor market features in the period 1972 to 1979. Using most samples and different outcomes we find no departure between Miami and its control between 1979 and 1983. Significant noise exists in many samples but we never find significant negative effects especially right after the Boatlift, when they should have been the strongest.... The very different conclusions... [of] George Borjas (2015) stem from the use of a small sub-sample of high school dropouts in the already very small March-CPS sample. That sample is subject to substantial measurement error and no other sample provides the same findings. Being imprecise about the timing of the data and the choice and validation of the control sample further contribute to the impression of an effect from the boatlift in Borjas (2015)...
