The greatest American debt selloff in 15 years

``"Five or six years ago, the big concern was that China was going to own the United States," says Gus Faucher, senior economist at PNC Bank. "Now the concern is that China is selling them."... Now that commodity prices are falling, countries that rely on commodities -- Brazil, Mexico, Indonesia -- just don't have the cash they once did to invest in safe assets like U.S. Treasury bonds... These countries are also under pressure provide support to their slowing economies....''