Why would they bother attacking? Just declare Taiwan a blight and use Eminent Domain to buy it. The US government will support it.
"Just declare Taiwan a blight and use Eminent Domain to buy it."
If this weren't so sad but true, it would be funny. ;-(
I think it would be best if everybody in Taiwan just relocated. Let China have the real estate, after it's gutted like John Galt's closet. Cheaper for the whole world, than a US-China war.