Aha!

I said in the previous post that I remembered some US official flying to China last year to flog mortgage-backed securities to them. Found it (13 July 2007) on Bloomberg:

... U.S. Department of Housing and Urban Development Secretary Alphonso Jackson is in Beijing to persuade the Chinese central bank to buy more securities from Ginnie Mae, a corporation under HUD that guarantees $417 billion in federally insured, fixed-rate mortgages.

... Ginnie Mae is ``in a better position than most'' to offer mortgage products because, unlike Fannie Mae and Freddie Mac, it provides the full backing of the U.S. government, Jackson said. Mortgage securities offer China's central bank better returns than U.S. Treasury bonds at the same level of credit risk, he said.

Now the chickens are flying back to roost.