The U.S. is escalating its trade conflict with China by proposing steep fees on Chinese-built ships and shipping companies entering American ports. This plan would impose millions of dollars in new fees per port call, with costs likely passed to U.S. importers and exporters. Shipowners and analysts are assessing the proposed fees, which could reach up to $1 million per U.S. port call for Chinese-built ships, even if they don't operate in the U.S. An additional fee of up to $1 million would apply based on future ship orders from Chinese shipyards.