https://www.brookings.edu/blog/order-from-chaos/2016/12/13/an-open-letter-to-donald-trump-on-the-one-china-policy/

An open letter to Donald Trump on the One-China policy

Richard C. Bush Tuesday, December 13, 2016

Dear President-elect Trump:
You told Chris Wallace on Fox News Sunday that you “fully understand the One-China policy.” I have no reason to doubt you. But because you may not have received a briefing from the State Department on this matter, I’d like to fill you in on a few aspects of a complicated policy that has not always been well-understood—even by experts on China—through the years. I won’t go over all the history and theology of U.S.-China relations and the Taiwan issue. Just the basics.
First, the One-China policy is something the United States adopted and has upheld for itself. Beijing did not impose it. And it dates back decades, to before our establishment of relations with the People’s Republic of China.https://www.brookings.edu/blog/order-from-chaos/2016/12/13/an-open-letter-to-donald-trump-on-the-one-china-policy/