The American Senator of the title is actually not the main focus of the story, but more a vehicle through whose eyes Trollope exposes the highs and lows of British life of the period and indeed some of the flaws which exist in our society even now. The Senator, the wonderfully named Elias Gotobed, is paying a visit to Britain to study British society, and whilst here ruffles the feathers of the great and good of British society.