They've lowered the rates they control to zero and have flooded the financial system with liquidity. Their balance sheets are now swollen with toxic assets and outright debt monetization won't bring rates down.
With each interest rate tick higher another "green shoot" dies...
US bonds sale faces market resistance:
"The US Treasury is facing an ordeal by fire this week as it tries to sell $100bn (£62bn) of bonds to a deeply sceptical market amid growing fears of a sovereign bond crisis in the Anglo-Saxon world.
The interest yield on 10-year US Treasuries – the benchmark price of long-term credit for the global system – jumped 33 basis points last week to 3.45pc week on contagion effects after
Standard & Poor's issued a warning on Britain's "AAA" credit rating.
The yield has risen over 90 basis points since March when the
US Federal Reserve first announced its controversial plan to buy Treasury bonds directly, a move designed to force down the borrowing costs and help stabilize the housing market.
The yield-spike may be nearing the point where it threatens to short-circuit economic recovery. While lower spreads on mortgage rates have kept a lid on home loan costs so far, mortgage rates have nevertheless crept back up to 5pc.
The Obama administration needs to raise $2 trillion this year to cover the fiscal stimulus plan and the bank bail-outs. It has to fund $900bn by September.
"The dynamic is just getting overwhelming," said
RBC Capital Markets.
The US Treasury is selling $40bn of two-year notes on Tuesday, $35bn of five-year bonds on Wednesday, and $25bn of seven-year debt on Thursday. While the US has not yet suffered the indignity of a failed auction – unlike Britain and Germany – traders are watching closely to see what share is being purchased by US government itself in pure "monetisation" of the deficit.
Don Kohn, the Fed's vice-chair, said over the weekend that Fed actions would add $1 trillion of stimulus to the US economy over time and had already prevented "fire sales" of assets.
"The preliminary evidence suggest that our program has worked," he said.
The US is not alone in facing a deficit crisis. Governments worldwide have to raise some $6 trillion in debt this year, with huge demands in Japan and Europe. Kyle Bass from the US fund Hayman Advisors said the markets were choking on debt.
"There isn't enough capital in the world to buy the new sovereign issuance required to finance the giant fiscal deficits that countries are so intent on running. There is simply not enough money out there," he said. "If the US loses control of long rates, they will not be able to arrest asset price declines.