20 U.S.C. § 130aa: Withdrawals and expenditures

The University may withdraw and expend its endowment fund income to defray any expenses necessary to its operation, including expenses of operations and maintenance, administration, academic and support personnel, construction and renovation, community and student services programs, technical assistance, and research. No endowment fund income or corpus may be used for any type of support of the executive officers of the University or for any commercial enterprise or endeavor entered into after January 1, 1981 . Except as provided in subsection (b), the University shall not, in the aggregate, withdraw or expend more than 50 per centum of the total aggregate endowment fund income earned prior to the time of withdrawal or expenditure. a financial emergency, such as a pending insolvency or temporary liquidity problem; a life-threatening situation occasioned by a natural disaster or arson; or another unusual occurrence or exigent circumstance. If the University withdraws or expends more than the endowment fund income authorized by this section, the University shall repay the Secretary an amount equal to 50 per centum of the amount improperly expended (representing the Federal share thereof). The University shall not withdraw or expend any endowment fund corpus. If the University withdraws or expends any endowment fund corpus, the University shall repay the Secretary an amount equal to 50 per centum of the amount withdrawn or expended (representing the Federal share thereof) plus any income earned thereon.