I really enjoyed this. The Plot Against America imagines Charles Lindbergh, daredevil aviator and Nazi sympathiser, becoming American president in 1940. Roth places himself and his family at the centre of the story and we see how Lindbergh's America changes their lives. It's an unusual book in that the central character plays almost no part in the development of the story. The young Philip Roth and his family are always at the mercy of events and can do very little to change them. Despite that, or perhaps because of it, the book is thoroughly gripping.
In a lot of ways it reminded me of To Kill A Mockingbird - a young protagonist comes to terms with a prejudiced world, led by the example of an idealistic father.