The stakes are quite high for the United States strategically. The United States would likely lose access to world-leading semiconductors and other critical components manufactured in Taiwan if China were to invade and successfully occupy Taiwan. This would severely weaken America's strategic position in the Western Pacific. Joe Biden has promised time and time again, if elected president, to stand up for Taiwan.
War with China would be unlike anything the United States has experienced before, therefore Washington authorities must take precautions to prevent accidentally starting one. People in the United States are used to seeing their armed forces deployed overseas. However, China represents a different kind of adversary, one with the military, economic, and technical might to cause widespread disruption in the United States at home.