https://www.washingtonpost.com/national-security/2022/10/21/trump-subpoena-jan-6-committee/
The House committee investigating the Jan. 6, 2021, attack on the U.S. Capitol issued a subpoena Friday for testimony and documents from former president Donald Trump, setting off a potentially prolonged legal battle with little historic precedent.
The committee requested that Trump testify under oath on or about Nov. 14, as well as any documents by Nov. 4 related to the former president's sweeping efforts to overturn the results of the 2020 presidential election and block the transfer of presidential power.
While the subpoena was anticipated, it is a remarkable escalation in the investigation into whether the deadly violence on Jan. 6 was the direct result of Trump's actions in the weeks after he lost his bid for reelection.