More evidence of the suspected understanding with China- they resumed buying US Tsy secs in return for no more QE:

The U.S. economy “has been doing worse than expected” and Beijing needs to “seriously assess” possible risks to its vast holdings of American debt, said Yu Bin, an economist in the Cabinet’s Development Research Center.

Yu expressed concern about a possible third round of Fed purchases of government bonds, known as “quantitative easing” or QE. He said that might hurt China by depressing the value of the dollar and driving up prices of commodities needed by its industries.

Bernanke: No Plans to Add New Stimulus Measures Now

July 14 (Reuters) — Federal Reserve Chairman Ben Bernanke backed away slightly from promising a third round of stimulus measures, telling a Senate panel Thursday that the central bank “is not prepared at this point to take further action.

The comments during his second day of congressional testimony sent the US dollar higher and caused stock to pare their gains.

On Wednesday, Bernanke suggested to a House panel that the Fed was ready to take further steps to boost the flagging US economy. That sent stocks soaring and pushed the dollar lower.

But on Thursday, Bernanke seemed to back away a bit from that plan.

“The situation is more complex,” he told the Senate Banking Committee. “Inflation is higher…We are uncertain about the near-term developments in the economy. We would live to see if the economy does pick up. We are not prepared at this point to take further action.”

He also said a third round of stimulus may not be that effective.

Bernanke also repeated his warning that a U.S. debt default would be devastating for the U.S. and the global economy.