00:00The U.S. may impose 100% tariffs on semiconductor makers that don't meet targets for U.S.-based production.
00:07The Wall Street Journal reports Washington could require chipmakers to produce as many chips in the U.S.
00:13as they sell to American customers or face the steep levies.
00:17But firms already expanding in the U.S. could benefit.
00:20Taiwan's TSMC, which makes around 90% of the world's most advanced chips,
00:25has begun production at its new plant in Arizona to supply some of its U.S. customers.
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