Daniel Okada is an assistant professor of criminal justice at California State University Sacramento. He is co-chair of the Justice Studies Association’s 2009 conference, which focused partly on the New Sanctuary Movement and other contributions of religious congregations to the plight of illegal aliens.

U.S. Immigration and Customs Enforcement in Washington, D.C., enforces U.S. immigration law.

Nancy Morawetz is a professor of clinical law at New York University. She is an expert on immigration and teaches courses on immigrant rights clinics. She can discuss the U.S. system of detention and deportation.

Doris Meissner is a senior fellow at the Migration Policy Institute in Washington. She was formerly a commissioner at the Immigration and Naturalization Service, which oversaw immigration before the establishment of the U.S. Immigration and Customs Enforcement agency in 2003.

Margie McHugh is co-director of the National Center on Immigrant Integration Policy at the Migration Policy Institute in Washington, D.C.

The World Hunger Education Service in Washington, D.C., posts definitions and data on global hunger and provides links to news stories on the topic. Daniel E. Shaughnessy is chairman.

William Gheen is president of Americans for Legal Immigration, which is based in Raleigh, N.C. The organization does not support providing sanctuary to illegal immigrants.

Gregory Freeland is an associate professor of political science at California Lutheran University in Thousand Oaks, Calif., and director of its Center for Equality and Justice. He is familiar with the organization, goals and spread of the New Sanctuary Movement.

The Food and Agriculture Organization of the United Nations works to eliminate world hunger. Its headquarters are in Rome, but it has a liaison office with North America in Washington, D.C.