A recent study from the Kauffman Foundation points to the slow immigration processing in the US as the cause for many of the world's best and brightest to give up on America and return abroad.

The research was conducted at Duke, NYU and Harvard, and this study is the third in a series of studies dealing with the contributions of immigrants to the American economy. This study looks at the contribution made by foreign nationals in the US to patent applications filed in the US and an increasing trend for these professionals to relocate abroad.

See Intellectual Property, the Immigration Backlog, and a Reverse Brain-Drain, Kauffman Foundation, August 22, 2007, for more information.