(sorry if this for some reason get's multiple postings, this system's submission procedure is a bit confusing to me -- kept giving me a not registered message and then having me re-register to post)
I believe the SaburoS reference to Nixon was because Nixon was the one that dropped the Republic of China and recognized the People's Republic of China.
MFN status seems mostly a misnomer to me. It really is more a "Nation Not Under Trade Sanctions" status (I forgot, Section 11 sanctions or something like that), rather than a true Most Favored Nation -- you're really not more favored than anyone other than the few countries here and there we are having a little spat with. This is a big reason why there is no longer MFN status, rather it is now the NTR status today (since 1998? 99?) -- standing for Normal Trade Relations. This is much clearer as to what that status is under the WTO/GATT/TRIPS legislations.
I believe the concept of the WTO is primarily to reduce the national barriers to trade. Not allowing a market as large as China's into the WTO, especially with the amount of trade between the US and the PRC, would be detrimental to the US. I believe this to be so because there is some semblance to rules/requirements and some forum for disputes with the PRC in the WTO as opposed to not. Otherwise the US and the PRC would be back to a more wild, wide-ranging tit for tat spats in trade, especially in a market the US is eager to get into.
As for the the perceived US hypocracy -- trade barriers seemed to always have been about protectionism and the whole concept of the WTO is hypocracy in my opinion then. But then again I've never really held dear to my hear the concept of international laws anyway. Seems as long as there is no world sovereign, there really is no international law, and any such international law is hypocracy itself. What I mean by this is that agreements are agreements, and that's all IL's are to me as they don't really have any of the usual earmarks of what a law is. Heck, to an American at least, just about all international laws would fail for vague and indefiniteness, if they had to pass traditional US legal analysis. Not that I am saying that IL's must pass US-centric views, other than to whatever extent it should be afforded to any other consensus giving civilized nation, or whatever the current maxim is today.
As for valuations of the Yuan/Renmebei, I believe the US is very interested beyond simple trade of some appliances sold back and forth, here and there. Given that the PRC has been buying up so much of US notes and debt, the effect of the PRC on the US economy goes beyond simple trade, despite what HSBC or John Kerry may believe or wish to admit to. I believe this may be driving much more of the US interest in PRC economic policy. I also believe much of the gobbledegook coming out of the popular media and from the politicians' mouth is just platitudes for the masses to gain a quick buck or a quick vote.
However, more in line with what that HSBC quote may have been getting at -- a disturbing observation: When the PRC tends to buy things, it tends to be able to back its purchases in hard values (such as gold), whereas the US seems increasingly backed merely by the good faith in the US economy which increasingly seems to be more hot air, relative to before, as the savings decline.
As an aside/tangent, this is more what's bothering me of late. The popular trend of savings (and spending) vs. recent US legislation in the bankruptcy code looks to me to be a recipe for long term disaster when you couple this with what many believe to be an impending correction in real property values. (Sorry, I don't mean to swap topics) The great Asian economic collapse of 5-10 years ago seems to be due to this same phenomina in large part. I believe if many get financially wiped out by this here in the US, the few system cheaters caught and the few banking industry's dollars saved by the bankruptcy reformation will not have been worth it. (fill in usual requisite comparisons to 1920's and 30's crashes here).