The media and the blogosphere have been alive this week with Treasury Secretary Henry Paulson and Fed Chariman Ben S. Bernanke’s trip to Beijing. Washington still feels the best way to quiet the clamor over the trade imbalance with China is to pressure Beijing to raise the value of the yuan. This week’s Economist chimes in arguing that revaluation of the yuan is not the solution that American policy makers seem to believe and furthermore would have unintended consequences both in China and in the US. Mr Paulson has taken the rather unusual tack of pleading with the Chinese to come to his aid against protectionist factions in America. Citing “resistance in both our countries to greater integration into the global economy”, he called for tangible results “on the most important issues facing our nations.” This is code for allowing the yuan to appreciate, and other measures to rein in the massive trade imbalances between the two countries. China’s cheap currency is the prickliest issue, at least in the public mind. A Democratic senator, Chuck Schumer, along with a Republican, Lindsey Graham, have been pushing a scheme to slap penalties on Chinese goods if China’s currency is not allowed to