Notwithstanding any other provision of law, the President, to address previously accrued and unreimbursed impact expenses, may, at the request of the Governor of Guam or the Governor of the Commonwealth of the Northern Mariana Islands, reduce, release, or waive all or part of any amounts owed by the Government of Guam or the Government of the Commonwealth of the Northern Mariana Islands (or either government’s autonomous agencies or instrumentalities), respectively, to any department, agency, independent agency, office, or instrumentality of the United States.