Dr. Andrew Bostom is associate professor of medicine at Brown University Medical School in Providence, R.I. He has written several books about Islam, including Sharia Versus Freedom: The Legacy of Islamic Totalitarianism.

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.

Read a March 2012 article by law professor Robert K. Vischer in the journal First Things. He argues that anti-Shariah laws set a dangerous precedent that could damage religious liberty for all, not just for Muslims.

The Pew Research Center released a report April 8, 2013, examining how major Christian denominations, as well as other faith groups, apply their religious laws to internal matters. Examples include Roman Catholic diocesan tribunals, which rule on marriage annulments, and Protestant disciplinary hearings for clergy who violate denominational rules about officiating at same-sex weddings.

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 Oct. 1, 2012, Religion News Service story about how anti-Shariah measures can complicate divorce for Muslim Americans.