Taiwan has a mixture of beliefs, with older people tending to want reunification while younger people tend to want to stay apart from China. There's also the unfortunate example of Hong Kong, which had its freedom removed recently.
The last thing I recall President Biden doing against China was to further restrict their access to advanced computer chips. I think the value of Taiwan Semiconductor is greatly underestimated - but not by world leaders. Advanced chips are critical to advanced military equipment.
"Taiwan makes 65% of the world’s semiconductors and almost 90% of the advanced chips."
https://www.voanews.com/a/race-for-semiconductors-influences-taiwan-conflict-/6696432.htmlAlmost two hundred years ago, Western powers controlled China (the "Opium Wars"). I suspect that is what China most wants to avoid, and is why they focus on defensive weapons. Those weapons include anti-ship missiles, which would be a significant threat to the US Navy (original typo: anti-chip missiles).
In both China and Russia, criticicism of the government is off limits. But in China, people loudly protested the treatment of a doctor who tried to warn about Covid - and China decided to make a memorial for him. I'll need to dig up other examples, but when a protest is in the millions, China seems to respond to it.
If China invades Taiwan, I expect the US cuts off all trade, and probably Europe to some extent. That creates a huge economic impact in China, where a fraction of the country's exports are simply not needed. If a hundred million people suddenly become unemployed, would they protest? That's an additional risk for China contemplating a violent solution to Taiwan.