Senator Abetz asked the Minister for Human Services, upon notice, on 13 April 2012: With reference to the answer provided to question no. HS 7, taken on notice during the 2011-12 Additional Estimates hearing of the Community Affairs Legislation Committee, relating to the Chronic Disease Dental Scheme: (1) On what legislative or regulatory authority does the department claim the ability to waive the totality of a debt but not part of a debt. (2) Does the Minister agree that injustice may occur as a result of the above approach.