"For these deniers, is simply voting on an EPA administrator too hot to handle?"
Last week, Republicans on the panel boycotted a vote on McCarthy, leaving Democrats unable to reach a quorum and forcing them to abandon the effort to send the nominee to the full Senate.
The committee is scheduled to reconvene at noon on Thursday to vote on McCarthy, who currently directs the EPA's air and radiation office.
In a letter to her GOP colleagues rescheduling the vote, Chairwoman Sen. Barbara Boxer (D-Calif.) claimed, "Gina is a highly qualified nominee... We need her strong, bipartisan, common-sense approach to lead the EPA."
Democrats have considered modifying Senate rules to prevent Republicans from filibustering McCarthy and other nominees, a maneuver dubbed the "nuclear option."