Julia Preston covered Central America for many years and shared the 1998 Pulitzer Prize in international reporting for coverage of drug corruption in Mexico. She was the national immigration reporter for the New York Times from 2006 to 2016 and most recently wrote for the Marshall Project. She is the author, with Samuel Dillon, of Opening Mexico: The Making of a Democracy (2004), which recounts Mexico’s transformation over three decades from an authoritarian state into a struggling democracy.