President Donald Trump’s administration has barred Nvidia Corp. from selling its H20 chip to China, an escalation of Washington’s tech battle with Beijing that will cost the company billions of dollars and hamstring a product line it explicitly designed to comply with previous US curbs.

The move to onshore chip manufacturing started long before the latest round of tariffs, but uncertainty around trade makes it more important.

The chipmaker is caught in the middle of the U.S.-China trade war and exposed to the tit-for-tat tariffs and other retaliatory measures.