Rosie Rios has chaired the United States Semiquincentennial Commission behind America250.
Rios became chair in July 2022. She is an American public official who served as the 43rd Treasurer of the United States from 2009 to 2016. Her work on America250 places her at the center of planning for the federal commemoration of the Declaration of Independence’s 250th anniversary.
The commission’s leadership has changed during the long preparation period. Daniel DiLella served as an earlier chair, and the commission includes congressional members, private citizens, and federal officials. That structure reflects the law’s goal of creating a national rather than purely local observance.
Rosie Rios is also distinct from the America250 Foundation’s staff and administrative partners. The commission is the congressionally appointed body, while the foundation and other organizations help deliver programs, raise support, and coordinate public engagement.