Dr. William Kerr of Harvard Business School Published a Study on Immigrants and US Innovation.

Abstract:

How does high-skilled immigration affect innovation in receiving countries? This column examines how large fluctuations in the admissions levels of H-1B visa holders between 1995 and 2008 influenced US patenting. It suggests higher H-1B admissions increased US innovation through the direct contributions of the immigrants without crowding out those of natives.

An article by William Kerr & William Lincoln,
published online 15 July 2010

Full Article Source:  http://www.voxeu.org/index.php?q=node/5296