The House select committee investigating the Jan. 6 attack on the Capitol sent letters on Monday to three House Republicans, seeking their testimony: Reps. Andy Biggs (R-Ariz.), Mo Brooks (R-Ala.) and Ronny Jackson (R-Texas).
Why it matters: The letters mark an escalation in the committee members' efforts to extract information from their Republican colleagues, doubling the total number of members sought out by the panel.
