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“The NAPPO Executive Committee is composed of the head of NPPO of each member country or its designated representative.  In Canada, the representative is the Chief Plant Health Officer of the Canadian Food Inspection Agency (CFIA) or her/his delegate.  In the United States, it is the Deputy Administrator of the Animal and Plant Health Inspection Service, Plant Protection and Quarantine of the United States Department of Agriculture (USDA-APHIS-PPQ, por sus siglas en inglés).  In Mexico, it is the Director General of Plant Health of the Secretary of Agriculture, Livestock, Rural Development, Fish and Food (SENASICA, based on the Spanish acronym).

The responsibilities of the EC members include:

  • Provide leadership, council and strategic planning for NAPPO
  • Oversee the activities and performance of the ED and the AMC
  • Approve the annual work program and appoint appropriate personnel to participate in NAPPO EGs
  • Approve the annual budget and review the annual financial statement
  • Approve NAPPO RSPMs and other NAPPO documents
  • Report the results of NAPPO activities to the appropriate authorities and stakeholders

Greg Wolff
Plant Protection Division, Canadian Food Inspection Agency
Ph: 613-773-7060
Email: Greg.Wolff(at)


Gregory Wolff began his government career in agriculture with the Government of Alberta in 1996.  He joined the federal government in 2000 and has held a variety of agriculture-related positions focused on plant health and international trade, based mostly in the Canadian Food Inspection Agency.  Recently, he led the development of Canada’s Plant and Animal Health Strategy.  Greg’s other government experience includes roles in the Minister of Agriculture’s office and at the Privy Council Office.  Greg is currently Director of the Canadian Food Inspection Agency’s Plant Protection Division.

Osama El-Lissy
Deputy Administrator,
US Department of Agriculture, Animal Plant Health Inspection Services, Plant Protection and Quarantine (USDA-APHIS-PPQ)
Ph: 202-690 0472
Email: Osama.A.El-Lissy(at)

Since 2013, Osama El-Lissy has served as the Deputy Administrator for the U.S. Department of Agriculture’s (USDA) Plant Protection and Quarantine (PPQ) program. He leads a globally dispersed staff of nearly 3,000 men and women who safeguard U.S. agricultural and natural resources from foreign pests and diseases and facilitate safe trade. 

Before becoming Deputy Administrator, he served as the Associate Deputy Administrator responsible for PPQ’s policy and financial management. Prior to that, El-Lissy coordinated national preparedness, response, and recovery from plant health emergencies. In that role, he worked with Federal and State agencies, industry groups, and technical experts to combat pests such as citrus black spot, European grapevine moth, and potato cyst nematode. From 2000 to 2005, he served as PPQ’s National Coordinator for cotton pest programs, coordinating national cotton pest programs in the United States and Mexico, including the boll weevil and pink bollworm eradication programs. 

His non-Federal experience includes more than 12 years managing large-scale pest control and eradication programs.


John Greifer - Alternate
Assistant Deputy Administrator, International Phytosanitary Standards
US Department of Agriculture, Animal Plant Health Inspection Services, Plant Protection and Quarantine (USDA-APHIS-PPQ)
Ph: 202-799-7159

John oversees and directs PPQ’s international and regional plant health standard setting activities at the IPPC and NAPPO. He first joined APHIS in 1989.  He has served in leadership positions in APHIS’ International Services (IS) branch, including as an Associate Deputy Administrator for IS, directing the Agency’s SPS trade strategies and international capacity development activities. He joined PPQ in 2012. 

During the course of his career, John has represented the U.S. on various IPPC committees including: the IPPC Bureau; Subsidiary Body on Dispute Settlement; Strategic Planning Group; and other various IPPC working groups. In his current role, John plays an active leadership role on the NAPPO Executive Committee.

John earned his B.A. and Master degree (in International Policy) from the University of Michigan. Prior to joining APHIS, he spent four years in Guatemala with the U.S. Peace Corps where he worked in the agricultural sector promoting rural youth programs.

javier trujillo.png

Javier Trujillo Arriaga
Director General de Sanidad Vegetal,
Servicio Nacional de Sanidad y Calidad Agroalimentaria (SENASICA) 
Ph: 52-55-5905-1000 xt 51319
Email: Trujillo(at)

Javier Trujillo Arriaga is the General Director for Plant Health, SENASICA. He has been a government official for the Mexican NPPO for 25 years. Mr. Trujillo is one of the seven members of the IPPC Bureau and FAO expert to promote the implementation of the International Code of Conduct on Pesticide Management. Within SENASICA, Javier is responsible for coordinating the team tasked with drafting the Plant Health Federal Act.

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