The United States' economy will regain the world's confidence when its government (first Bush, now Obama) stops behaving like a banana republic.To paraphrase the Chinese, this (should) "hurt the feelings of the American people." And like those many things that "hurt the feelings of the Chinese people", too bad it's true.
When it behaves responsibly in fiscal affairs. When it ceases to print currency without a parallel increase in production. When it no longer interferes in the market with arbitrary rescue operations to bail out companies, like General Motors, that are condemned to disappear because of the rejection of consumers, the pigheadedness of labor unions, and the insensitive stupidity of management.