** EXCERPT ** With a large charitable donation in hand, Indonesian businessman Mochtar Riady flew to Little Rock to dine with first lady Hillary Rodham Clinton at a 1993 gala honoring her as an "Arkansan of the Year" at a time his company, a multibillion dollar banking conglomerate, was seeking an end to a 30-year trade embargo with Vietnam. Five days after the March 4, 1993, dinner at the Excelsior Hotel, Mr. Riady took the embargo question directly to President Clinton, saying in a four-page letter that its demise would bring political reforms in that communist country. By that time,...