Updated

U.S. Treasury Secretary Timothy Geithner says his country has more confidence now that there is a sustainable expansion — but added that it is not a boom.

Geithner, speaking Friday at the World Economic Forum, said in the wake of some expansion in the world's top economy, there was more confidence that slipping back into a recession was avoidable.

He said that confidence was justified, citing economists who have forecast growth of between 3 and 4 percent this year and next for the United States.