The U.S.-Taiwan deal aimed at expanding chip production capacity in the U.S. is unlikely to fully wean Washington off the island's most advanced semiconductors anytime soon, several analysts told CNBC, leaving the so-called "silicon shield" largely intact for now. Taiwan dominates global chip production, with the Taiwan Semiconductor Manufacturing Company producing most of the world's advanced chips . Nearly one-third of global demand for new computing power is estimated to be fabricated in