Quarterly earnings from both Amazon and Apple Inc., two of the world’s most valuable companies, put on full display how US President Donald Trump’s trade wars threaten the bottom line of even big

About half of Amazon’s third-party sellers are from China, and the White House took significant issue with Amazon’s rumored plans to highlight tariff-related price increases this week.

Amazon disclosed roughly $1 billion in one-time charges during its first-quarter results. Tariffs were at least partly to blame.

Amazon.com Inc. said it’s bracing for a tougher business climate in the coming months, echoing concerns from a range of companies that tariffs and related economic turmoil could crimp consumer spending.

The White House's reaction to reports that Amazon was planning to itemize tariff pricing — which Amazon later denied — shows how tricky the current political landscape is for American businesses. Why it matters: This kerfuffle highlights the potential blame game between corporations and the administration,