According to this article[1], 46% of American PhDs in science and engineering were awarded to foreigners in 2007. For 2011, I've heard 52%, but I can't locate t

According to this article[1], 46% of American PhDs in science and engineering were awarded to foreigners in 2007. For 2011, I've heard 52%, but I can't locate the source. [1] http://online.wsj.com/article/SB10001424052748704905604575026800522011226.html http://online.wsj.com/article/SB1000142405274870490560457502...