SEOUL -- Samsung Electronics will expand its semiconductor factory in Texas to make room for next-generation manufacturing equipment as it seeks to wrestle the title of the world's biggest contract chipmaker away from Taiwan Semiconductor Manufacturing Co.
TSMC has already announced a plan to build a new plant in the state of Arizona. As the U.S. and China vie for high-tech supremacy, the two Asian giants are stepping up spending to carve out a bigger slice of the American market, which is home to such leading tech companies like Google, Facebook and Amazon that design their own chips but use contractors for production,
