Taiwan
Q. Mr. President, is the policy of strategic ambiguity towards Taiwan dead?
The President. No.
Q. Could you explain?
The President. No.
Taiwan
Q. Mr. President, do—would you send troops to Taiwan if China invaded?
The President. The policy has not changed at all. I stated that when I made my statement yesterday.
NOTE: The President spoke at 12:46 p.m. at the Kantei, the official residence of the Prime Minister of Japan, during a photo spray with Prime Minister Fumio Kishida of Japan, Prime Minister Narendra Modi of India, and Prime Minister Anthony Albanese of Australia following the announcement of the Quad Fellowship scholarship program for graduate students in science, technology, engineering and mathematics.
Joseph R. Biden, Remarks in an Exchange With Reporters in Tokyo, Japan Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/356079