Well, the US lost the top guy in machine learning, Andrew Ng. In the US, he was a professor at Stanford, not even the head of the department, with a few grad students. Now he's Chief Scientist and VP at Baidu.
He's Chief Scientist at Baidu Research, which is based in Sunnyvale. So he's not really "lost" to the US, just lost to Stanford (and, I guess, to Google, since he was working with them before).
