From the American Prospect Online Edition:
A major reason why mortgage rates have stayed low is that there’s a lot of money around. And much of that money has been coming from abroad. China and the rest of Asia have been putting their spare cash into America, in order to prop up the dollar and make it easier for them to export to us.
But that’s about the change. We’ve been pressuring them to let their currency rise, and they’re getting the message. We don’t know yet how much they’ll let it rise. But the writing’s on the wall, in Chinese characters. And other Asian nations are following China’s lead.