On Monday, the Fed’s plansearned a hearty endorsement from at least one foreign trade partner — India.

“A strong, robust, fast-growing United States is in the interests of the world,” said Prime Minister Manmohan Singh. “And therefore, anything that would stimulate the underlying growth and policies of entrepreneurship in the United States would help the cause of global prosperity.”

Mr. Singh, an economist by training, made his comments during a joint news conference here with President Barack Obama. The prime minister’s support could help the United States deflect criticism of Washington’s economic policies at the upcoming Group of 20 meeting in Seoullater this week, which both Mr. Obama and Mr. Singh will attend.

President Obama, perhaps less surprisingly, also voiced support for the Fed policy in his first public comment on the action.

“The worst thing that could happen to the world economy — not just ours, but the entire world’s economy — is if we end up being stuck with no growth or very limited growth,” Mr. Obama said. “I think that’s the Fed’s concern and that’s my concern, as well.”

The two leaders’ comments came on the third day of a 10-day Asia swing for President Obama — a journey the White House is characterizing as an economic mission. China, Germany, Brazil and other nations with big surpluses in exports and their current accounts — a broad measure of foreign trade and financial dealings — tend to see the Fed’s planned bond purchases as flooding the market with dollars. That cheapens the American currency, critics say, and makes other countries exports less price competitive.

The Fed’s action, by lowering American interest rates, can also cause money to flood into other countriesas investors seek higher returns — which can threaten to overheat those countries’ economies.

But in the news conference here, Mr. Obama countered with a not-so veiled criticism of China and other countries with large trade and current account surpluses. He said the world needed a broad rebalancing.

“We can’t continue to sustain a situation in which some countries are maintaining massive surpluses, others massive deficits and there never is the kind of adjustment with respect to currency that would lead to a more balanced growth pattern,” Mr. Obama said.

At the G-20 meeting, the president intends to press other countries to embrace a non-biding target to limit their current account surpluses and deficits to no more than 4 percent, according to an administration official. The administration is also expected to press the International Monetary Fund to take a greater role in monitoring trade patterns and intervening on exchange rate disputes.