They're just trying to hedge against a potential Romney victory. He has constantly vilified them as a currency manipulator-- which they are.
The global imbalances that exist are because of the black hole that is China. Bernanke can't print dollars fast enough and lazy and cheap US consumers can't buy cheap Chinese crap fast enough. Politicians here are such wusses thus the game continues.
When the markets determine the true value of RMB, only then can we get back to some global economic stability.
Personally, I think we should uses China's own words against them: "China will do what is in the best interests of China".
Therefore, the US "should do what's in the best interest of the US". I would peg the DOLLAR to the RMB at 3:1.
Boom, I just eliminated half of the US deficit overnight!
Instead of China parking their economic surplus in non-interest bearing treasuries, they should spend the surplus on improving their citizens quality of life, and not just creating the fastest rising class of billionaires through govt patronage and ghost cities.
Start with indoor plumbing and move west to east. With their new found currency strength, they can demand that their US factories work faster and harder. More manufacturing comes back to the US, net exports become more balanced, GDP growth occurs, US has to offer a real rate to entice lenders, inflation goes way down, peace on earth.
Standard of living rises in China, communism is overthrown, oligarchies quickly sprout up, business and investment start to boom.
It's time the globe stops carrying the world's second largest economy. They are no longer "emerging" and to play with the same rules as everyone else.