House Speaker Nancy Pelosi is being sued by three House Republicans after being fined for not wearing masks while on the House floor. Republicans Reps. Marjorie Taylor Greene, Thomas Massie, and Ralph Norman are asking the court to bar Pelosi from implementing fines and rule on the constitutionality of the fines.

The Hill reports:

The House Ethics Committee announced on Tuesday that it was upholding fines against several GOP lawmakers —including Greene, Massie and Norman — that were levied in May after the lawmakers protested a requirement to wear masks on the House floor.

House Democrats voted in January to levy $500 fines for the first offense and $2,500 for the second offense.

The lawmakers protested the mask mandate in May because the Centers for Disease Control and Prevention (CDC) announced that fully vaccinated people didn’t need to wear masks in most settings.

The plaintiffs argue that their protest in May did not constitute “disorderly behavior [because] it did not disrupt the House’s operations or good order, nor is it otherwise unlawful conduct.”

On Tuesday, the CDC updated its guidelines again and is now recommending vaccinated individuals wear masks indoors in some areas with high transmissibility rates.