Bill Williams, also known as Telalsemkin siyam, is one of sixteen hereditary chiefs of the Squamish Nation. He is very politically active in his community and has held many positions on the Squamish Nation Council including Recreation Director, Councilor, and Band Manager. Formerly he worked as an Aboriginal Management Consultant to various organizations such as Canada Employment and Immigration, the Native Brotherhood of BC, and the BC Native Socio-Economic Task Force. He is one of the original trustees of the Aboriginal Electoral Endowment Trust, and was appointed as its representative on the National Revenue Committee. He has also served as a Director of Administration of the Assembly of First Nations, and as a member of the National Executive of the Aboriginal People's Commission.
Williams is a co-founder of the Uts'am Witness Project, which reconnects urban residents with nature and invites them to participate in a Coast Salish witness ceremony. He is also a member of the Spakwus Slolem, or Eagle Song Dancers.