US is facing double bubble trouble

Amid increasingly turbulent credit markets and ever-weaker reports on the economy, the Federal Reserve has been unusually swift and determined in its lowering of the overnight lending rate.

The White House and Congress have moved quickly as well, approving rebates for families and tax breaks for businesses. And more monetary easing from the Fed could well be on the way.

The central question for the economy is this: Will this medicine work? The same question was asked repeatedly in Japan during its "lost decade" of the 1990s. Unfortunately, as was the case in Japan, the answer may be no.