A GRIPPING CHRONICLE OF THE ARMY THAT KEEPS AMERICA MOVING - OR CAN STOP IT OVERNIGHT! They control the lion's share of American wealth. They are on of the largest private sources of real estate investment capital in the world. Their very name stirs whispers of corruption, racketeering, pension fraud, political manipulation - and fanatic loyalty from most of the 2.3 members in - and out- of the driver's seat.  Steven Brill probes deep into the heart and gut of the nation . . . into the Hoffa murder . . . the Nixon-Fitzsimmons-Watergate connection . . . the pension fund that became the underworld's bank with interest-free, nonrepayable "loans" . . . . the violent, ironic history . . . and the lives of its leaders and rank-and-file.   THE TEAMSTERS