Nina Shea is director of the Hudson Institute’s Center for Religious Freedom, based in Washington, D.C. She has been an international human-rights lawyer for more than three decades, and her areas of expertise include Islamic law and human rights. Contact through David Tell, director of public affairs and special projects.

Paul Marshall is a senior fellow at the Hudson Institute’s Center for Religious Freedom in Washington, D.C., and has written or edited many books about religion and politics. He served as editor and contributor for Radical Islam’s Rules: The Worldwide Spread of Extreme Sharia Law.

Julie Macfarlane is a law professor at the University of Windsor in Windsor, Ontario, Canada. She has expertise in Islamic family law and is the author of Islamic Divorce in North America: A Shari’a Path in a Secular Society.

The American Civil Liberties Union issued a report in May 2011 about the push for anti-Shariah laws.

Read a CBS Miami story about a measure that died in the Florida Legislature in May 2013.

Robert Vischer is dean and professor of law at the University of St. Thomas in Minneapolis. His research interests explore the intersection of law, religion and public policy, and his books include Conscience and the Common Good: Reclaiming the Space Between Person and State.

This April 8, 2013, graphic by the Pew Research Center gives state-by-state details about proposed or enacted legislation to limit use of foreign/religious law in court matters.

Read an Aug. 4, 2013, Associated Press story in the South Florida Times about a controversy in Nigeria over whether a proposed constitutional amendment concerning “age of consent” would conflict with Shariah.  

Read an Aug. 13, 2013, guest column posted by United Press International, in which retired Marine Lt. Col. James Zumwalt warns of attempts at a global Islamic takeover in which Shariah would be the universal legal code.