Question: Underground Airlines is a 2016 novel by Ben Winters that contains the unsuccussful proposal introducted by which United States Senator?
Sentence (from "Underground Airlines"): Underground Airlines is a 2016 novel by Ben Winters which is set in a contemporary alternate-history United States where the American Civil War never occurred because Abraham Lincoln was assassinated prior to his 1861 inauguration and a version of the Crittenden Compromise was adopted instead.
Relevant evidence: Yes