In 2029, the United States is engaged in a bloodless world war that will wipe out the savings of millions of American families. Overnight, on the international currency exchange, the "almighty dollar" plummets in value, to be replaced by a new global currency, the bancor. In retaliation, the president declares that America will default on its loans. The government prints money to cover its bills. What little real currency remains for savers is rapidly eaten away by runaway inflation.
Check out The Mandibles: A Family, 2029-2047, a novel by Lionel Shriver.
I'm currently reading it. Despite a great deal of humor, the book is a little too close to scary.