"With unemployment at almost 8 percent, we are still far from the fully healthy and vibrant conditions that we would like to see," Bernanke said at a meeting in Moscow of his counterparts from the Group of 20. "The United States is using domestic policy tools to advance domestic objectives."
The U.S. central bank has faced criticism from some foreign officials, including Brazilian Finance Minister Guido Mantega, who in October said that its accommodation has weakened the dollar, threatening to fuel a "currency war" of competitive devaluations. The Fed under Bernanke has expanded assets to a record exceeding $3 trillion and pushed down the benchmark interest rate close to zero.
"We believe that by strengthening the U.S. economy we are helping to strengthen the global economy as well," Bernanke said.
The Fed last month affirmed a plan to buy $85 billion per month in bonds, seeking to foster growth and reduce a 7.9 percent jobless rate. "The Federal Reserve continues to provide accommodative monetary policy in our effort to foster maximum employment and price stability," Bernanke said.
Since it last cut the main interest rate in December 2008, the Fed has engaged in three rounds of large-scale asset purchases and offered more guidance on its intention to spur growth. Vice Chairman Janet Yellen in October defended the Fed's policies in Tokyo, saying that emerging nations have the tools to manage excess capital flows.
Swiss National Bank President Thomas Jordan, who caps the Swiss Franc against the euro, said in Geneva this week he doesn't see a currency war brewing as "central banks' monetary policies are internal programs."
Bernanke said financial regulation will be "one of the most important topics" of the meeting, reiterating the U.S.'s commitment to implement new banking standards known as Basel III.
"Because we live in a globalized financial system where transactions can take place in any jurisdiction and money flows easily across borders, it is critical that we have consistent financial regimes across all members of G-20," he said. "We will work with our partners to establish consistent policies on matters such as derivatives reform and the resolution of systemically important financial institutions."