Executives at S&P 500 companies are sounding off on the US-China trade war during their first-quarter conference calls. Markets Insider reports that Goldman Sachs equity strategists analyzed a selection of executive commentary across S&P 500 earnings calls and found trade-related uncertainty to be a major theme plaguing business. If there's an elephant in the room that US multinational corporations are grappling with, it's the ongoing trade war between the two largest economies in the world.