With the economy in a tailspin, the U.S. Federal Reserve policymakers will today (Tuesday) almost certainly cut the benchmark Federal Funds rate from its current 1.0% to 0.5%.

So the question no longer seems to be whether the Fed will ease, but whether the move will make any difference.

The Fed has been hamstrung by a credit-market double-whammy: borrowers who are in limbo due to fears of soaring unemployment, and banks that have turned off the lending spigot. Even so, a U.S. economy facing its worst financial crisis since the Great Depression demands the central bank take decisive action.

That has led to a strong undercurrent of opinion among analysts that the Fed will pursue other measures to spark a moribund U.S. economy.

“We look…