The U.S. Supreme Court declined to hear an appeal of a lower court ruling, which denied UPS's legal claim that the U.S. Postal Service’s pricing model gave it an unfair advantage over parcel shipping competitors. In 2018, a U.S. Appellate Court in Washington, DC upheld the pricing methodology. Amazon backed the USPS in the case.

Walmart reported 37% growth in ecommerce sales in the first quarter, with online grocery as well home and fashion categories as the primary drivers. Total revenue for the quarter was $123.9 billion, an increase of $1.2 billion or 1%.