Walmart — the world's largest retailer — is now issuing a warning to customers that they may be paying more for the same products if President-elect Donald Trump makes good on his promise to impose new tariffs on imports.

Walmart CFO John David Rainey told FOX Business that the company won't be immune if President-elect Trump pursues a tariff on imports from all foreign countries.

As an increasing number of retailers make plans to prepare for tariffs, the idea of them becomes more looming. Here are eight companies that have been outspoken about tariff risks.

Trump promised voters tariffs are a panacea for the economy, but Walmart finance chief John David Rainey warned they will be inflationary for customers.