From answering previous questions on organ harvesting of prisoners in China i have come to one conclusion as to why the United States of America have not rebuke or chastise the China government for carrying out these acts. Note i have come to a conclusion on the fact of researching the issue and trying to gather information on what the United States had to say about the issue. So far after doing a lot of research i have found none,no not one statement about America condemning the issue. This is the reasons for not condemning the issue 1. The United States would not issue or chastise the Chinese government because they knew about the organ harvesting of prisoners. Also if America condemn the Chinese government openly this will have grave consequences on both China and the United States of America economically,politically and financially. Also it would do more damage to the image of China globally especially in the area of human rights. To me it would not be a wise decision to chastise China on the organ transplants it would be very disastrous for both countries if America did this. Also America will eventually have to make a statement about this which i think will be better for them to come clean about the issue and stop pussyfooting about it. I would advise that you read these four links about the topic the last one is very interesting

http://www.epm.org/artman2/publish/ethics/Americans_Getting_Transplanted_Organs_from_Chinese_Inmates.shtml

http://chinademocracy.blogspot.com/2008/08/cnn-facing-disgrace-busted-badly.html

http://www.washingtontimes.com/news/2006/mar/23/20060323-114842-5680r/

http://www.facts.org.cn/krs/cacs/rohol/200712/t73358.htm

Obama does not want to offend China because the United States borrows lots of money from them. He and his party also think along the same lines as Communist China on many issues. And he is also trying to avoid a trade war with them which goes back to not wanting to offend them.

I don't know what the Obama administration has said about this, but the US criticises China on a lot of issues, esp surrounding human rights.

As for who specifically does the criticising and when and where they do it, that is the art of diplomacy. There are other things that the US and China need to cooperate on, and frankly the day when you're both speaking about things like climate change, nuclear proliferation and economic stability, is not a day that you need to bring up every other issue you have with them.

Personally I'm no fan of presumed consent for organ donation.

However people who favor it are basically saying there should be a system where those who don't want to donate can opt out, rather than a system where you have to actively take the trouble to opt in. I don't like it, but it's hardly what you're talking about with China.

Also, countries that have a system where the organ donation forms are designed to say: "Check this box if you don't want to be a donor" rather than the other way around have a vastly higher rate of donation.

The psychological reasons for that are discussed in this video:

http://www.youtube.com/watch?v=9X68dm92HVI

More on these matters in the page on Behavioral Economics.