But that is it, Taiwan never ceded from China. It was part of the greater China and the losing side went there. Why do you think the US has never gone against the One China political stance?
What Is the U.S. “One China” Policy, and Why Does it Matter?
When the United States moved to recognize the People’s Republic of China (PRC) and de-recognize the Republic of China (ROC) in 1979, the United States stated that the government of the People’s Republic of China was “the sole legal Government of China.” Sole, meaning the PRC was and is the only China, with no consideration of the ROC as a separate sovereign entity.
The United States did not, however, give in to Chinese demands that it recognize Chinese sovereignty over Taiwan (which is the name preferred by the United States since it opted to de-recognize the ROC). Instead, Washington acknowledged the Chinese position that Taiwan was part of China. For geopolitical reasons, both the United States and the PRC were willing to go forward with diplomatic recognition despite their differences on this matter. When China attempted to change the Chinese text from the original
acknowledge to
recognize, Deputy Secretary of State Warren Christopher told a Senate hearing questioner, “[W]e regard the English text as being the binding text. We regard the word ‘acknowledge’ as being the word that is determinative for the U.S.” In the August 17, 1982, U.S.-China Communique, the United States went one step further, stating that it had no intention of pursuing a policy of “two Chinas” or “one China, one Taiwan.”
To this day, the U.S. “one China” position stands: the United States recognizes the PRC as the sole legal government of China but only acknowledges the Chinese position that Taiwan is part of China. Thus, the United States maintains formal relations with the PRC and has unofficial relations with Taiwan. The “one China” policy has subsequently been reaffirmed by every new incoming U.S. administration. The existence of this understanding has enabled the preservation of stability in the Taiwan Strait, allowing both Taiwan and mainland China to pursue their extraordinary political and socioeconomic transitions in relative peace.
www.csis.org
A lot more good reading there.