If the question was why would Intel invest into making the chips in US - from recent news it seems like US understands how dependent it is on other nations for silicon manufacturing, which poses many questions. The biggest one seems to be national security, which looking from the side is the only factor that gets thing done in US.
You will want to read up on The Republic of Formosa, WWII and the history of Taiwan at some point. There are enough Chinese nationals on this website to downvote us all but suffice to say, it is widely regarded at the federal level that Taiwan could come under siege by the Chinese Communist Party at anytime and be used as a bargaining chip with the West along with Hong Kong, the DPRK armistice and Western financial interests in Macau. We need to begin evacuating Hong Kong and Taiwan immediately back to the USA --in fact, China just seized a boat of people fleeing Hong Kong last night, the first time they have done that (and on what charges, nobody knows, not even the Chief of Police of Hong Kong). As the President said today, we are going to break it off cold with China and as you expand your knowledge of the situation, you will realize that China claims Taiwan as part of its territory and the people of Taiwan do not.