On June 3, 2019, the Mexican Ministry of Economy will no longer allow the “Usage Affidavit” to act as a waiver for 63 Mexican Official Norms (NOMs).
The removal of the “Usage Affidavit” as a waiver was originally announced in the Mexican Diario Oficial from October 23, 2018, and the implementation was delayed by a second amendment published on February 28, 2019.
Both Agreements published in the Diario Oficial can be found here:
http://www.dof.gob.mx/nota_detalle.php?codigo=5541783&fecha=23/10/2018
http://www.dof.gob.mx/nota_detalle.php?codigo=5551424&fecha=28/02/2019