Evidence shows that cheap masks from China have cornered U.S. domestic manufacturers, according to a report by Nikkei Asia.  As a result, industry professionals are now calling on the Biden administration to take immediate action to ensure self-sufficiency over the national security concerns. The American Mask Manufacturer’s Association (AMMA) highlighted to President Joe Biden in an updated 1,458-word letter on May 13 the challenges faced by U.S. mask manufacturers. It exposed that China has been continually dumping its products in the U.S. market at well below actual cost. While there are $0.03–$0.06 of raw materials that go into every surgical mask produced—a cost that is the same everywhere in the world—Chinese masks are sold for less than $0.01 in the United States, the letter noted. Consequently, around 260 million American-made masks are left unsold and stockpiled in warehouses. At the same time, U.S. manufacturers have had to cut 2,647 jobs. A case …