To answer the question accurately, I would need the specific content of each character's speech in the second part of the play. Since I do not have access to the passage, I can't determine which two speeches emphasize the theme of immigrants coming to America to escape difficult situations.
However, if you have a summary or key points from each character's speech, I could help you analyze which ones best fit that theme. Otherwise, I would recommend looking for speeches that mention escaping hardship, seeking better opportunities, or reflect personal stories that align with the immigrant experience in America.