China vows to hit back if targeted by U.S. on yuan By Langi Chiang and Ken Wills BEIJING (Reuters) – Beijing will retaliate if the United States declares China a currency manipulator and imposes trade sanctions, Commerce Minister Chen Deming said on Sunday, firing the latest salvo in a spat over the value of the yuan. Chen again accused Washington of politicizing the issue ahead of an April 15 deadline for the U.S. Treasury to rule whether China is unfairly holding down its exchange rate to gain a competitive edge in global markets. "The currency is a sovereign issue and...