U.S. Hostage and Wrongful Detainee Day Act of 2023

S 769 designates March 9 as "U.S. Hostage and Wrongful Detainee Day" and establishes a specific flag to honor citizens held hostage or wrongfully detained abroad. The bill requires the President to issue an annual proclamation for the day and mandates that the designated flag be displayed at the Capitol, White House, State Department, and Defense Department buildings on March 9, Flag Day (June 14), Independence Day (July 4), and on days when a U.S. citizen returns from detention or dies while detained. This affects federal government locations and officials responsible for flag displays, not individual citizens. The measure is procedural, focusing on symbolic recognition through designated dates and flag protocols.