Steve Ricchiuto, chief economist at Mizuho
Securities claims US credit rating might be downgraded in a few months or even in a few weeks as the supercommittee failed to arrive at consensus on debt-cut plan. Steve
Ricchiuto expects S&P, Fitch or Moody's may downgrade US rating before
December 23, date when regulation implementing supercommittee's plan should be
ratified. In August S&P cut US credit rating from AAA to AA+.