The Russian firm that special counsel Robert Mueller has charged with funding Russia’s election meddling on social media and is run by an oligarch known as “Putin’s chef” challenged Mueller’s legal authority in court filings Monday. Concord Management was among the defendants named in an indictment approved by Mueller’s grand jury in February. Mueller accused Concord Management of funding the organization of internet trolls who allegedly created fake social media accounts in the lead-up of 2016, and charged it with conspiracy to defraud the United States.

The Justice Department asked a court to dismiss the lawsuit brought by a watch dog group alleging that President Trump is in violation of the Constitution’s Emolument clause. The filing from the federal government on Friday argued that neither the Citizens for Responsibility and Ethics (CREW), nor the businesses that have joined the lawsuit, have the standing to bring the legal challenge, while asserting that the Emoluments clause does not apply to the sort of profits Trump is benefiting from through his businesses while in office.