December 31, 2021 letter to the editor by Illinois comptroller Susana Mendoza, includes “In September, the interest waiver on those unemployment insurance advances ended. As a result, Illinois has racked up $20 million in interest fees owed to the federal government and could reach more than $100 million if the $4.5 billion the state owes is left unpaid for a year. That is why I called on my fellow state financial officers to join me in signing a letter to U.S. Treasury Secretary Janet Yellen seeking the administration’s support for reinstating the interest waiver.”