TAIPEI Taiwan "will not agree" to making 50 percent of its semiconductors in the United States, the island's lead tariff negotiator said yesterday, as Washington pressures Taipei to produce more chips on U.S. soil. "I want to clarify that this is the U.S.'s idea. Our negotiation team has never made a 50-50 commitment to a chip split," Vice Premier Cheng Li-chiun told reporters in Taipei. "Please be rest assured that we did not discuss this issue this time, and we will not agree to such a