Last Updated: 12:47pm BST 16/07/2008
The US Treasury is running out of time before foreign patience snaps, writes Ambrose Evans-Pritchard
Merrill Lynch has warned that the United States could face a foreign "financing crisis" within months as the full consequences of the Fannie Mae and Freddie Mac mortgage debacle spread through the world.
The country depends on Asian, Russian and Middle Eastern investors to fund much of its $700bn (�350bn) current account deficit, leaving it far more vulnerable to a collapse of confidence than Japan in the early 1990s after the Nikkei bubble burst. Britain and other Anglo-Saxon deficit states could face a similar retreat by foreign investors.
"Japan was able to cut its interest rates to zero," said Alex Patelis, Merrill's head of international economics.
"It would be very difficult for the US to do this. Foreigners will not be willing to supply the capital. Nobody knows where the limit lies."
Brian Bethune, chief financial economist at Global Insight, said the US Treasury had two or three days to put real money behind its rescue plan for Fannie and Freddie or face a dangerous crisis that could spiral out of control. "This is not the time for policy-makers to underestimate, once again, the systemic risks to the financial system and the huge damage this would impose on the economy. Bold, aggressive action is needed, and needed now," he said.