Two high school juniors and seniors from each state, Washington, D.C. and the Department of Defense Education Activity are chosen each year for this program, which includes a $10,000 scholarship. The 104 selected students will travel to Washington, D.C. as delegates for Washington Week. Applicants must be participants in student government. A principal or teacher nomination is required.
Missouri deadline is in September
Illinois deadline is in October
Her is the link: https://ussenateyouth.org/selection_process_qualify/