Amazon pre-market falls, White House says its decision to display product tariff costs is hostile.

Amazon fell 2% in pre-market trading. Earlier, the White House Press Secretary said that the company's reported plan to show the impact of tariffs on prices is a "hostile" practice. Earlier reports cited a source saying that Amazon will "soon" display the additional costs imposed by U.S. tariffs on each product, showing how much of the total price comes from tariffs next to the product's listing on the website.