The White House took aggressive aim at Amazon, with President Donald Trump putting in a call to Amazon founder Jeff Bezos Tuesday morning, after the company considered displaying the added cost of tariffs on certain items.

President Donald Trump has been left fuming at Amazon owner Jeff Bezos after the retailer revealed plans to include the cost of tariffs in the displayed prices of products. Amazon intends to show the cost of Trump’s tariffs on countries such as China alongside the listed price of each item for sale on its website.

Amazon, the e-commerce retailer, backed down from potentially displaying “import charges” on its websites after President Donald Trump called founder Jeff Bezos on Tuesday morning to complain. A source familiar with the phone call told the Washington Examiner that Trump and Bezos spoke after the president was informed about a report from Punchbowl News that