President Donald J. Trump speaks during a meeting with members of his Cabinet, in the Cabinet Room of the White House March 8, 2018 in Washington, DC.

President Donald Trump is "not involved" in the process of choosing whether Amazon receives a multibillion-dollar Defense Department cloud computing contract, the White House said Wednesday.

White House press secretary Sarah Huckabee Sanders told reporters the president has not taken a role in choosing whether the internet retail titan will get the massive contract. Amazon is competing with rivals such as Oracle and Microsoft for the deal, and other companies argue the bidding process favors Amazon.

Trump has attacked Amazon in Twitter tirades, prompting questions about what he would do to hamstring the company. In recent days, the president has repeatedly made the unsubstantiated claim that Amazon costs the U.S. Postal Service "billions of dollars" to act as its "Delivery Boy."