He is now a faculty member at George Washington University's Elliott School of International Affairs.

Gnehm completed his master's degree in 1968, and spent one year of his graduate studies at the American University in Cairo under a post-graduate Rotary International Fellowship.

He is a member of the Sigma Chi fraternity and Delta Phi Epsilon foreign service fraternity[2] Gnehm joined the U.S. Department of State in 1969 and has forged a long and distinguished diplomatic career in the U.S. Foreign Service.

His positions included: Director General of the Foreign Service and Director of Personnel for the Department of State; Deputy Permanent Representative of the United States to the United Nations; Deputy Assistant Secretary of State, Bureau of Near East and South Asian Affairs; Deputy Assistant Secretary of Defense for Near East and South Asia; Deputy Chief of Mission, American Embassy, Amman, Jordan, and Embassy Sanaa, Yemen; head of the U.S. Liaison Office, Riyadh, Saudi Arabia; and Deputy Principal Officer, U.S.

Continuing in the family tradition, Gnehm's son Edward attended George Washington University where he received his BA and an MBA.