Kevin is arrested in Cuba and extradited to the United States for his involvement in a criminal enterprise. It is not clear in the show why Kevin is arrested in Cuba or why he is extradited to the United States, as the plot does not delve into these details.In real life, the United States and Cuba do not have a extradition treaty, so it would not be possible for someone to be extradited from Cuba to the United States in the way that Kevin is in the show.