The Executive Council Winter Session (ECWS) is the annual meeting of the National Congress of American Indians (NCAI) Executive Council, which includes NCAI's Executive Committee and Tribal delegates. This meeting presents an opportunity for Tribal delegates to hear from members of Congress and the Administration, furthering the government-to-government relationship between Tribal Nations and the federal government. NCAI's 2026 ECWS will be held at the Walter E. Washington Convention Center in Washington, D.C.