Rep. Marjorie Taylor Greene, R-Ga., an outspoken opponent of masking and Covid-19 vaccination mandates, was fined Monday for a third time over her refusal to comply with House rules about face coverings.

The House Ethics Committee published a notice saying Greene will have to pay a financial penalty for an incident on Sept. 21, when she did not wear a mask on the House floor. The fine is $500 for a first offense and $2,500 for each subsequent violation.

Greene, who apologized in June for comparing mask rules to the Holocaust, did not appeal the fine.

Greene was first fined in May as part of a group of House Republicans who refused to wear masks and again for an incident in the House on Sept. 8.