There's occupying a foreign territory and decisively winning conventional battles. The US has no issues with the latter, and Taiwan will be the latter, unless y

There's occupying a foreign territory and decisively winning conventional battles. The US has no issues with the latter, and Taiwan will be the latter, unless you think the US is going to invade China and hold a city or two for two decades. The Gulf War put the world on notice at how quickly Iraq, then the 5th (iirc) largest armed force, was dismantled in days by the US war machine.