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.

The White House lashed out at Amazon on Tuesday for reportedly planning to display how much of a product’s cost comes from Trump’s tariffs. Doing so would emphasize to consumers that U.S. tariffs are not paid by overseas companies, but by the American companies importing the goods, and then largely passed on to customers.

The White House and Amazon were involved in a clash after White House Press Secretary Karoline Leavitt claimed the tech giant reportedly planned to display tariff costs on its website. President Trump reportedly contacted Amazon mogul Jeff Bezos,