自由港考虑在美国扩张铜业务，并警告关税成本

Core Viewpoint - Freeport-McMoRan Inc. is considering expansion at several U.S. plants but warns that tariffs imposed by President Trump may increase its costs by approximately 5% [1] Group 1: Company Performance - Freeport-McMoRan reported first-quarter earnings that exceeded analysts' average expectations [1] - The company's copper sales also surpassed its previous forecasts [1] - Following the earnings report, the company's stock price rose by 7.1% to $37.69 [1] Group 2: Industry Context - The ongoing trade war is likely to lead to increased procurement costs for Freeport-McMoRan [1]