Hear that? That’s the sound of holes being poked in one of the most common arguments for pushing undocumented workers out of America. Undocumented workers have a “negligible impact” on the wages of documented workers that work at the same firm, according to a paper released in March by the Federal Reserve Bank of Atlanta. Documented workers at firms that also employ undocumented workers earn 0.15 percent less — or $56 less per year on average — than they would if they worked at a firm that does not employ undocumented workers, according to the study. In fact, workers in retail and leisure and ity actually earn slightly more money when their firms hire undocumented workers, since having more employees allows them to specialize, according the paper.