CVS Health is teaming with the U.S. Postal Service to deliver prescription medications to customer’s homes, using one of President Trump’s favorite foils to compete against another: Jeff Bezos’ Amazon.

The Postal Service is facing pressure from the White House to raise the price it charges Amazon to ship parcels, despite the potential to raise deficits at the independent agency. The administration has launched an investigation into the finances and operations of the Postal Service as the president continues to express frustration with news coverage of the Washington Post, which is owned by the Amazon founder.