The Government of D.C. has expressed that the mandatory mask order is not applicable to D.C. Lawmakers and Federal Government employees while on duty
According to the DCist, the Mayor of DC, Muriel Bowser, signed an order on July 22nd, requiring people to wear masks in public under most circumstances. The article notes that there will be a few exemptions to the mandate, including children under three and people vigorously exercising, eating or drinking, or being alone in an enclosed office. However, the Government of DC adds that this order will not extend to people in the judicial or legislative branches of DC's government if they are on duty. Additionally, this order will not be applicable to the federal government employees who are also on duty.
The COVID-19 pandemic has given rise to a lot of potentially dangerous misinformation. For reliable advice on COVID-19 including symptoms, prevention and available treatment, please refer to the World Health Organisation or your national healthcare authority.