served as a tax assessments manager for the District of Columbia
. She is accused by federal law enforcement authorities of being the central participant in the largest fraud scheme ever perpetrated by a District of Columbia government official. According to those officials, she worked with others to fraudulently approve over $31 million in improper tax refunds, with some estimates nearing $50 million. In her office, she was referred to as "Mother Walters" for the loans and extravagant gifts with which she would shower her fellow employees and friends. Walters was arrested in November 2007 and, as of February 2008, is being held without bond.