Capitol Report: A new theory for the productivity slowdown — illegal immigrants

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An extended family of eight from Colombia speak with Royal Canadian Mounted Police officers after they illegally crossed the U.S.-Canada border near Hemmingford Quebec.

All sorts of reasons have been trotted out to explain why U.S. productivity growth has slowed so markedly, from mismeasurement to stalling innovation to weak capital investment.

Oxford Economics has a new research note adding another theory: unauthorized workers.

They say that up to 15% of the 2 percentage point slowdown in productivity growth can be attributed to illegal immigration.

Also read:U.S. productivity still worst in five years despite better showing from manufacturing

By their numbers, which rely on data from the Labor Department and a survey from Pew Research, there are just over 11 million illegal immigrants in the U.S.

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