From 1945 to 1971, China was represented at the United Nations by the government in Taipei, with almost universal recognition. It would be very odd for any country to say that Taipei (and hence Taiwan) was not part of China at that time.
And if Taiwan was part of China from 1945 to 1971, surely it must be part of China now, because there have been no significant political changes in China since then.
Both the government in Beijing and the government in Taipei recognize Taiwan as being part of China. Each government claims to be the rightful government of all of China, including Taiwan. (However, the government in Taipei only has effective control over Taiwan and a few islands, while the government in Beijing has control of the mainland.)
Since 1979, the USA has had a policy of “strategic ambiguity” where they do not say that Taiwan is part of China, but they clearly recognized Taiwan as part of China up until then, and they have not made any statements changing that position.
if it’s ambiguous, how can they recognize it as part of China at the same time? That’s the opposite of ambiguous.
Yeah, it’s not actually very ambiguous. It’s more confusing than ambiguous.
If you ask if the government in Taipei is the legitimate government of China, the USA will say no.
If you ask if Taiwan is an independent country, the USA will say no.
But if you ask if Taiwan is part of China, the USA will avoid answering, even though that’s the only option left.