On Oct. 26, the Sac and Fox Tribe of the Mississippi in Iowa — also known as the Meskwaki Nation — issued a joint letter along with the Ponca Tribe of Nebraska, the National Congress of American …On Oct. 26, the Sac and Fox Tribe of the Mississippi in Iowa — also known as the Meskwaki Nation — issued a joint letter along with the Ponca Tribe of Nebraska, the National Congress of American …