The San Francisco branch of the Federal Reserve offers "The Effect of Immigrants on U.S. Employment and Productivity" by visiting scholar Giovanni Peri of UC Davis (Wall Street Journal article here, the brief study at [1]). According to Peri, we're all rich beyond our wildest dreams due to massive immigration: "There is no evidence that immigrants crowd out U.S.-born workers in either the short or long run... "the economy absorbs immigrants by expanding job opportunities rather than by displacing workers born in the United States." ...Peri's work estimates that an inflow of immigrants equal...