A congressional investigation has discovered strange communication equipment on Chinese-built cargo cranes at U.S seaports, The Wall Street Journal reported on Thursday. Rather than building them domestically at potentially higher costs, the U.S. relies heavily on Chinese-built cargo cranes that are relatively cheap to produce and equip at seaports across the country. The congressional probe discovered that several of these cranes, built by Chinese mega-manufacturer ZMPC, contain communications devices that were not requested or don’t appear to support standard operations, heightening existing espionage concerns, according to the WSJ. U.S. intelligence has warned that Chinese cranes – equipped with an array...