Mystery Filing Appears to Ask High Court to Act in Mueller Probe

(Bloomberg) -- A new legal filing appears to ask the U.S. Supreme Court to intervene for the first time in Special Counsel Robert Mueller’s investigation into the 2016 election.

The document, which is under seal, stems from a Dec. 18 federal appeals court ruling that required an unidentified company, owned by an unidentified foreign country, to turn over information to a grand jury.

The dispute is believed to be tied to Mueller’s probe, although public information about the case doesn’t mention him or the investigation. Mueller is investigating Russian interference in the 2016 presidential election and possible obstruction by President Donald Trump.

The grand jury dispute has been shrouded in mystery, in part because officials closed an entire floor of a federal courthouse in Washington during arguments on Dec. 7. Politico linked the case to Mueller in October, citing a conversation overheard by a reporter in the court clerk’s office.

The appeals court order described the company only as a “corporation” owned by “Country A.” The three-judge panel rejected contentions that a federal sovereign-immunity law shielded the company from having to comply.

The new filing asks Chief Justice John Roberts to temporarily block that ruling. The Supreme Court’s online docket includes the number of the appeals court case but doesn’t say who submitted the application.

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