The case was effectively moot even before the Supreme Court's action on Monday as the committee obtained relevant emails and has concluded its investigation.
Eastman had pushed the discredited argument that then-Vice President Mike Pence had the power to refuse to certify the 2020 presidential election results.
Conservative Justice Clarence Thomas for the first time recused himself from a case involving the Jan. 6, 2021, attack on the U.S. Capitol by then-President Donald Trump's supporters as the Supreme Court on Monday rejected an appeal brought by former Trump legal adviser John Eastman.Thomas, under fire over claims of ethical lapses, had participated last year when the court rejected Trump's bid to prevent White House documents from being handed over to the House committee investigating Jan. 6.
Then, Thomas was the only justice to signal support for Trump's legal arguments.