The most obvious is partisan retribution. Ever since Nancy Pelosi created a precedent by vetoing Republican picks for the Jan. 6 investigation, McCarthy had a ready-made justification for denying minority Democrats their own picks. It’s only a bonus that Swalwell, an internet troll who was once duped by a ChiCom honeypot, will be denied a seat on the Intelligence Committee. https://thefederalist.com/2023/01/18/mccarthy-has-plenty-of-good-reasons-to-boot-democrats-from-committee-seats-especially-adam-schiff/