March 22, 2026

Trump issues stern warning to Iran as war enters a fourth week and an ultimatum is set to reopen the Strait of Hormuz; proposal to send ICE agents to U.S. airports to manage long security lines as administration pushes Democrats on GOP-backed funding deal; March Madness heats up as eight teams advance to the Sweet 16, with a look ahead to key women's matchups; and more on ABC's Good Morning America.