Isaiah Vivanco is a lifelong resident of the Soboba Indian Reservation and is serving his third two-year term as Chairman for the Soboba Tribal Council. This is his seventh term overall, having also served as Vice-Chairman for three terms and one as treasurer. He served for many years as the Tournament Director for the annual Soboba Foundation & Soboba Casino Resort Charity Golf Tournament, the Foundation's most successful fundraising activity. Isaiah was recently elected to a third term on the CNIGA Executive Committee as treasurer for 52 member Tribes. He also was elected to his second two-year term as a Board member for the California Fee-to-Trust Consortium.

Since 2022, Isaiah has served as chair of the Tribal Nations Advisory Council (TNAC) for AISES (the American Indian Science and Engineering Society). He is a member of the Riverside County District Attorney’s Tribal Advisory Board and serves as Vice President of the 7G Foundation, which supports Tribal youth nationwide. Isaiah previously worked for Valley-Wide Recreation and Park District for 28 years, before retiring in 2015 to dedicate all his time to the Tribe. He enjoys playing Peon and watching his children and grandchildren sing and dance at gatherings. Isaiah works hard to deliver strong leadership for his Tribe. It is very important to him to provide for the current membership as well as future generations to come.