As they negotiated establishment of diplomatic relations, the U.S. and PRC governments agreed to set aside the contentious issue of U.S. arms sales to Taiwan. They took up that issue in the 1982 August 17 Communiqué, in which the PRC states “a fundamental policy of striving for peaceful reunification” with Taiwan, and the U.S. government states it “understands and appreciates” that policy. The U.S. government states in the 1982 communiqué that with those statements “in mind,” “it does not seek to carry out a long-term policy of arms sales to Taiwan,” and “intends gradually to reduce its sale of arms to Taiwan, leading, over a period of time, to a final resolution.” The U.S. government also declares “no intention” of “pursuing a policy of ‘two Chinas,’” meaning the PRC and the ROC, “or ‘one China, one Taiwan.’”"
The One China Policy was and remains a convenient status quo for all parties. The risk is that China decides that it's newfound economic and military might have changed that calculus.
https://crsreports.congress.gov/product/pdf/IF/IF12503/1
"1982 U.S.-PRC Joint Communiqué/Six Assurances
As they negotiated establishment of diplomatic relations, the U.S. and PRC governments agreed to set aside the contentious issue of U.S. arms sales to Taiwan. They took up that issue in the 1982 August 17 Communiqué, in which the PRC states “a fundamental policy of striving for peaceful reunification” with Taiwan, and the U.S. government states it “understands and appreciates” that policy. The U.S. government states in the 1982 communiqué that with those statements “in mind,” “it does not seek to carry out a long-term policy of arms sales to Taiwan,” and “intends gradually to reduce its sale of arms to Taiwan, leading, over a period of time, to a final resolution.” The U.S. government also declares “no intention” of “pursuing a policy of ‘two Chinas,’” meaning the PRC and the ROC, “or ‘one China, one Taiwan.’”"