By Mick Krever, CNN If diplomacy is a tightrope walk, Gary Locke, as the U.S. ambassador to China, walks one of the thinnest. To listen to the 2012 U.S. presidential candidates, China is an economic cheater, global bully, and human rights violator that the U.S. needs to wrestle under control. In a debate last month … Continue reading The man standing between the U.S. and China