To authorize the President to posthumously award the Medal of Honor to Marcelino Serna for acts of valor as a private in the Army during World War I.

HR 5521 authorizes the President to posthumously award the Medal of Honor to Marcelino Serna, a World War I Army private who volunteered for service despite being a Mexican immigrant and not yet a U.S. citizen. The bill specifically overrides standard time limits for awarding military honors to recognize Serna's acts of valor - detailed in his Distinguished Service Cross citation - where he singlehandedly fought and captured enemy forces in France. This would formally honor Serna, who received multiple foreign and state decorations (including Texas' Lone Star Medal of Valor in 2016) but was reportedly overlooked for the Medal of Honor due to limited English proficiency. The award would be granted to Serna's descendants and serve as public recognition of his service, consistent with similar honors given to contemporaries.