https://www.cnbc.com/2018/04/02/amazon-is-under-pressure-again-after-trump-tweets-its-a-scam-costing-the-post-office-billions.html

Amazon shares fell nearly 2 in the premarket Monday after President Donald Trump attacked the company from his Twitter account.

The president said via Twitter on Saturday that Amazon was scamming the U.S. Postal Service, adding the service loses "billions of dollars" delivering packages for the e-commerce giant.