The main purpose of this legislation is to establish Rosa Parks Day as a federal holiday in the United States. This day would honor the legacy of Rosa Parks, who is widely recognized for her pivotal role in the civil rights movement, particularly for her act of defiance against racial segregation. Key provisions of the legislation include the amendment of existing law to officially designate Rosa Parks Day as a legal public holiday. This change would be reflected in the list of federal holidays, specifically adding Rosa Parks Day after Thanksgiving Day.