On Flag Day, June 14, 2018, Feliciano was the keynote address speaker for the Smithsonian National Museum of American History in Washington, D.C. where 19 new citizens pledged their allegiance to the United States. The event was held in Flag Hall, where the actual banner that flew over Fort McHenry in 1814, inspiring Francis Scott Key to write the poem which would become "The Star-Spangled Banner" is exhibited. At this same event a donation ceremony was held where Feliciano presented to the Smithsonian Museum his Candelas guitar with which he first rendered the "Star-Spangled Banner,", causing a national furor in 1968, along with other personal objects for the Smithsonian's permanent collection.