; and (viii) commuter rail passenger transportation. 3. Restrictions on the use of Federal funds During the applicable period, notwithstanding any other provision of law, no Federal funds may be obligated or expended to propose, establish, implement, or enforce, directly or indirectly through the imposition of a condition on receipt of Federal funds, any requirement that an individual wear a mask or comply with a mask mandate while traveling as a passenger of an air carrier in the national airspace system, using public transit, or while in any elementary school, secondary school, or institution of higher education. 4. Prohibitions on imposing a mask mandate on passengers of air carriers in the national airspace system (a) No mask requirements on passengers of air carriers in the national airspace system Notwithstanding any other provision of law, during the applicable period, neither the President nor any other Federal officer, employee, agency, or office shall issue or enforce an order requiring an air carrier to impose a mask mandate on individuals who are passengers of the air carrier in the national airspace system. (b) No authority To refuse air transportation During the applicable period, no certificate holder under part 119 of title 14, Code of Federal Regulations, which conducts scheduled operations under part 121 of that title, nor any other air carrier who provides passenger air transportation in the national airspace system, shall refuse transportation to a passenger on the basis that the passenger refuses to wear a mask or comply with a mask mandate while traveling in the national airspace system. (c) No authority To issue or enforce mask mandates on passenger air carrier operations in response to a public health emergency Section 361 of the Public Health Service Act ( 42 U.S.C. 264 ) is amended by adding at the end the following: (f) Nothing in this section authorizes the Secretary to require individuals to comply with a mask mandate (as defined in section 2 of the Freedom to Breathe Act ) while