The Chinese embassy to Canada on Monday claimed that a minor “contractual” issue caused a million Chinese N95 masks exported to Canada last month to be defective and useless. The Chinese claimed the contractual issue has been addressed. Canadian officials were literally left speechless by the embassy’s breezy statement. The huge shipment of masks in question was rejected by inspectors from the Canadian Health Ministry in the last week of April because they did not meet filtration standards. The masks were actually built to the KN95 standard, a Chinese designation considered substandard by the United States but normally accepted as...