In a letter to US Trade Representative Robert Lighthizer, the company said expanded tariffs on Chinese imports would hurt its customers, its suppliers and the US economy.
"The immediate impact will be to raise prices on consumers and tax American business and manufacturers," Walmart said.
The administration was unmoved. On Monday, it pressed forward with 10% tariffs on those products and $200 billion worth of other imports from China. The tariffs, which take effect next week, will jump to 25% at the end of the year.
The latest round of tariffs brings the US trade war with China directly to Walmart (WMT), the country's largest retailer, and hits the everyday products it sells.