Intel has failed to produce chips with less than 10 nm details, which leave two companies doing it: Taiwan Semiconductor Manufacturing Company, and Samsung. trump just did not think it was important that chips be made in America(he is not interested in small things).
The danger here for the world economy is these are both in war zones... Well, sort of war zones. The Korean War never officially ended, and in theory could always start up again. Nor did the Chinese Civil War officially end.
Even without a full war, there are severe shortages. Japan is arguing with South Korea, and stopping shipments of needed chemicals. Taiwan is arguing with China, and missing shipments. Recently car factories have been shut for lack of computer chips. Car computer chips are the lowest margin, so the first to be cut.
The danger here for the world economy is these are both in war zones... Well, sort of war zones. The Korean War never officially ended, and in theory could always start up again. Nor did the Chinese Civil War officially end.
Even without a full war, there are severe shortages. Japan is arguing with South Korea, and stopping shipments of needed chemicals. Taiwan is arguing with China, and missing shipments. Recently car factories have been shut for lack of computer chips. Car computer chips are the lowest margin, so the first to be cut.