Concerns are rising that the sweeping tariffs on all foreign imports that President-elect Donald Trump has vowed to impose could cause the prices of groceries to rise.

A Walmart executive warned that President-elect Trump’s plans to raise tariffs on imports could drive the retail giant to increase the price of store items.

The Walmart executive’s comments hint at the trickle-down impact of tariffs, as companies pay the import tax upfront and often pass on the higher input costs associated with these fees to consumers.