; and (3) by striking as adjusted by paragraph (2) and inserting adjusted as provided by law . (c) Effective date This section and the amendments made by this section shall take effect December 31, 2016. 4. Prohibiting use of funds for official travel expenses of Members of Congress and legislative branch employees for airline accommodations other than coach-class (a) Prohibition Except as provided in subsection (b), no funds appropriated or otherwise made available for the official travel expenses of a Member of Congress or other officer or employee of any office in the legislative branch may be used for airline accommodations which are not coach-class accommodations. (b) Exceptions Funds described in subsection (a) may be used for airline accommodations which are not coach-class accommodations for an individual described in subsection (a) if the use of the funds for such accommodations would be permitted under sections 301–10.121 through 301–10.125 of title 41 of the Code of Federal Regulations if the individual were an employee of an agency which is subject to chapter 301 of such title. (c) Rule of Construction Nothing in this section may be construed to affect any officer or employee of an office of the legislative branch which, as of the date of the enactment of this Act, is subject to chapter 301 of title 41 of the Code of Federal Regulations. (d) Definitions (1) Coach-class accommodations In this section, the term coach-class accommodations means the basic class of accommodation by airlines that is normally the lowest fare offered regardless of airline terminology used, and (as referred to by airlines) may include tourist class or economy class, as well as single class when the airline offers only one class of accommodations to all travelers. (2) Member of Congress In this section, the term Member of Congress means a Senator or a Representative in, or Delegate or Resident Commissioner to, the Congress. (e) Effective date This section shall apply with respect to fiscal year 2018 and each succeeding fiscal