Where is Jim during this entire episode? Why didn't Twain involve him more?

Jim is at the raft.  Twain didn't involve Jim because Jim is a slave, and it would cause problems in the town if they were walking around with a slave.  Also there would be a fight if Jim found out that the con men weren't the king and a duke.  Finally I think there would have been a problem with Jim if he found out that a slave family was being separated because of the con men.  It is