34 C.F.R. § 31.8
(a) Enforceability of debt by offset. In deciding whether the Secretary has established that the debt described in the pre-offset under § 31.3 is owed by the employee, or whether the employee has established that the debt is not enforceable by offset, the hearing official shall apply the principles in this paragraph.
(3) The act or omission of an institution of higher education at which the employee was enrolled does not constitute a defense to repayment of an obligation with regard to a grant or loan under a program authorized under Title IV of the Higher Education Act or similar authority, except to the extent that—
(4)
(i) A debt otherwise established as owed by the employee is enforceable by offset under this part if the Secretary sends the pre-offset notice for the debt within the ten year period following the later of—
(b) Extreme financial hardship.
(3) In making this determination, the hearing official shall consider—
(v) The extent to which the employee and his or her spouse and dependents have other exceptional expenses that should be taken into account, and whether these expenses have been minimized.
(Authority: 5 U.S.C. 5514; 31 U.S.C. 3716)