Borjas strikes back in the next round of paper(s) on the impact of the Mariel Boatlift on American wages.  You would not be shocked to find that he finds that the immigrants were harmful to Floridians:

This fundamental error in data construction (wintercow: in the Round Three paper) contaminates the analysis and helps hide the true effect of the Mariel supply shock.

In other news:

• Culturally relevant training seems to have large positive impacts on test scores, attendance and credits earned for at-risk high school students.
• This was new information to me: it seems that Americans’ nutritional status declined considerably in the antebellum period.
• The “kid tax” strikes again. This time, it appears that the dependent coverage mandate in Obamacare is being paid for by a reduction of wages of $1,200 by workers at firms already offering employer-based coverage, regardless of whether they have kids. Public service announcement: remember that middle class wages have stagnated for some time now. There is nothing to see here.