Seven-Year-Old on Mission for His Mom - Lobbies Mexican Lawmakers to Prevent Her Deportation From U.S. Four-foot-tall second-grader Saul Arellano, a U.S. citizen, was to stand before 500 members of the lower house of the Mexican Congress on Tuesday to plead for their help in lobbying Washington to stop the deportation of his migrant mother, who has taken refuge in a Chicago church. His fight is being closely watched on both sides of the border: The result could set a precedent for more than 3 million children, like him, who are Americans born to at least one parent who is...