House Minority Leader Kevin McCarthy is the only GOP member who can offer a “motion to vacate the chair” and force a floor vote on whether Pelosi can retain the speaker’s gavel, according to House rules implemented at the start of this Congress. McCarthy apparently has not yet decided whether he will support the insurgent effort. But McCarthy did agree to hold a GOP conference meeting next Tuesday to discuss the idea, according to Republican sources — a sign that he is at least giving serious consideration to deploying the procedural weapon. McCarthy did not respond to requests for comment.