U.S. Federal Reserve Board ( Fed ) Chairman Ben Bernanke Wednesday said the RMB exchange rate policy for China to provide an effective export subsidy , its expression is critical of the Chinese members of Congress to provide new ammunition .

Bernanke also said that further appreciation of the RMB line with China's fundamental interests.

He said, "We hope China's exchange rate policy to take further action , thereby creating a level playing field , from the Chinese point of view, which also contribute to the balanced development of its domestic economy , adding to its monetary policy more independent . "

But Bernanke made clear he is not the action that the U.S. Congress to take action to promote the best way to China .

"I want Congress to take strong action to carefully deliberate before , " Bernanke said .

China has recently relaxed the implementation of nearly two years of RMB USD peg policy , but since then has appreciated very small .

Bernanke before the Senate Finance Committee issued a policy statement at the hearing , comes a few calls for legislation to force China to speed up the response to make the occasion .

Senator Sherrod Brown asked for and insisted that his statement a few years ago , accusing China's exchange rate policy is an effective subsidy, Bernanke 's answer is yes. When asked how much the Chinese yuan is undervalued when Bernanke said: " From an academic article , we see that between 10-30 % . "

But he also warned not to trade deficit with China and unemployment linked .

He said: " In the longer term , the overall employment or unemployment rate and our current account deficit is no significant relationship between .