The Supreme Court declined Sen. Lindsey Graham's request to block a subpoena ordering him to testify before a special grand jury investigating allegations of tampering in the 2020 presidential election by then-President Donald Trump. 

Lower courts had already denied requests for a pause by Sen. Graham, R-S.C., who is now scheduled to testify on Nov. 17 in Atlanta. 

Graham had argued that the speech and debate clause of the Constitution shields him from being forced to appear before the grand jury. 

"The lower courts also made clear that Senator Graham may return to the District Court should disputes arise regarding the application of the Speech or Debate Clause immunity to specific questions," the Supreme Court wrote in Tuesday's order. "Accordingly, a stay or injunction is not necessary to safeguard the Senator’s Speech or Debate Clause immunity."