Wal-Mart Heiress Surrenders College DegreePOSTED: 8:29 pm EDT October 19, 2005 LOS ANGELES -- Wal-Mart heiress Elizabeth Paige Laurie is now no longer a graduate of the University of Southern California. Laurie has returned her degree nearly a year after a former roommate alleged that Laurie had paid her $20,000 to do her homework. Elena Martinez told ABC's "20/20" she'd written term papers and done assignments for Laurie for more than three years. Laurie is the granddaughter of Wal-Mart co-founder Bud Walton. A statement from USC said she "voluntarily" surrendered her degree and returned her diploma to the school. Laurie's...