How is the author's article, which is printed in the Wall Street Journal importance in the memoir, Undocumented?

Late in the narrative, an article published in the Wall Street Journal serves as the means by which the author reveals himself to be an undocumented immigrant. The before, during, and after of the article's publication are profoundly significant, in that they mark a thematically significant turning point in the narrative. He is no longer keeping the secret that has essentially defined his life, placing himself and his family at significant risk in order to bring attention to a truth that is bigger than himself or his family - the truth of being an undocumented immigrant in America.