More people are emigrating from the US than immigrating to it for the first time since the 1960s. A Pew analysis based on census data found that the country’s foreign-born population declined by nearly 3% in the first six months of the year. The Trump administration has celebrated the outflow as a vindication of its push to cut immigration, both by discouraging people to come and by deporting those in the country without authorization. Yet the costs for the US could be considerable, the Nobel Prize-winning economist Paul Krugman warned: Because undocumented migrants are concentrated in industries such as agriculture, construction, and elder care, a sudden loss of labor could hammer individual sectors, which wi