U.S. President Donald Trump's plan to revive U.S. shipbuilding using massive fees on China-linked ship visits to American ports is causing U.S. coal inventories to swell and stoking uncertainty in the embattled agriculture market, as exporters struggle to find ships to send goods abroad.

Proposed U.S. port fees on China-built ships choking coal, agriculture exports
U.S. agriculture exports face uncertainty due to proposed shipping fees, traders say