Amazon.com Inc. claims it lost a Pentagon cloud contract valued at as much as $10 billion because of political interference by President Donald Trump, according to the judge overseeing the case.

Federal Claims Court Judge Patricia Campbell-Smith said during a court proceeding last week that Amazon’s lawsuit argues that the Pentagon didn’t award the cloud deal to Microsoft Corp. on the basis of a fair evaluation of the companies’ bids.

“Plaintiff contends that the procurement process was compromised and negatively affected by the bias expressed publicly by the president and commander in chief Donald Trump against plaintiff,” Campbell-Smith said in a recording of a status hearing released by the U.S. Court of Federal Claims in Washington Thursday.

Amazon (AMZN) filed a lawsuit under seal with the court last month to formally protest its loss of the Pentagon’s Joint Enterprise Defense Infrastructure, or JEDI, cloud contract. The judge’s comments were the first public confirmation that Amazon cited bias by Trump as grounds to overturn the award to Microsoft.