The U.S. House of Representatives committee probing the deadly January 6 Capitol riot said on Thursday it had issued a subpoena for records and testimony from James P. "Phil" Waldron, a retired Army colonel who worked with former President Donald Trump's legal team.

According to widespread media reports, Waldron said he had briefed members of Congress on a PowerPoint presentation listing proposals for how to challenge Trump's defeat by President Joe Biden in the 2020 presidential election.