“…Sec. 2.  Immediate Action to Require Mask-Wearing on Certain Domestic Modes of Transportation. (a)  Mask Requirement.  The Secretary of Labor, the Secretary of Health and Human Services (HHS), the Secretary of Transportation (including through the Administrator of the Federal Aviation Administration (FAA)), the Secretary of Homeland Security (including through the Administrator of the Transportation Security Administration (TSA) and the Commandant of the United States Coast Guard), and the heads of any other executive departments and agencies (agencies) that have relevant regulatory authority (heads of agencies) shall immediately take action, to the extent appropriate and consistent with applicable law, to require masks to be worn in compliance with CDC guidelines in or on:

(i)    airports;
(ii)   commercial aircraft;
(iii)  trains;
(iv)   public maritime vessels, including ferries;
(v)    intercity bus services; and
(vi)   all forms of public transportation as defined in section 5302 of title 49, United States Code…”