The Fed's chairman, Ben Bernanke, is widely expected to discuss further stimulus actions in a speech on Friday. This may involve more "quantitative easing" - buying up US debt to inject more cash into the financial system.
The Fed has already carried out two rounds of quantitative easing (QE), to stabilise the 2008-09 financial crisis, and more recently to boost the flagging recovery. Earlier this month, the US central bank also took the unusual step of saying that it expected to keep short-term interest rates close to zero until 2013.
On Friday, Mr Bernanke will give the keynote speech at the annual meeting of central bankers at Jackson Hole in Wyoming.
The second round of QE and the interest rate commitment were hinted at by Mr Bernanke when he spoke at the same event last year.