FORT SMITH, Arkansas (AP) -- A former Wal-Mart Stores Inc. vice chairman who was a protege of founder Sam Walton pleaded guilty to fraud and tax charges Tuesday, admitting that he stole money, gift cards and merchandise from the world's largest retailer. Tom Coughlin, 57, faces a maximum of 28 years in prison after pleading guilty to five counts of wire fraud and one count of filing a false tax return. He also could be fined $1.35 million. The judge ordered a presentencing report that will take up to 14 weeks to prepare. Wal-Mart lawyers referred Coughlin to federal prosecutors...