Is China spying on American ports?
On Feb. 29, the chairman of the House Committee on Homeland Security, Rep. Mark Green, R-Tenn., sent a strongly worded letter to an obscure Chinese equipment manufacturer: Shanghai Zhenhua Heavy Industries Co. (known as “ZPMC”). ZPMC is the world’s top producer of ship-to-shore gantry cranes used at container terminals the world over — nearly 80%…