In 2003, Walther was appointed director of the Arkansas Economic Development Commission (AEDC) by then-governor Mike Huckabee.[3]
In 2008, he was nominated and confirmed as the director of the U.S. Trade and Development Agency (USTDA) by then-president George W. Bush.[3] In 2011, Walther served under a second president when he was nominated and confirmed to serve on the board of directors for the Export-Import Bank of the United States by Barack Obama.[3]