Some for-profit businesses are joining religiously affiliated nonprofits in challenging the Affordable Care Act’s contraception mandate, claiming it violates their religious liberty rights. A Pew Research Center analysis reviews the situation before a significant case is heard by the 10th Circuit Court of Appeals.

Across the U.S., religious courts operate on a routine, everyday basis. How do some of the country's major Christian traditions and other religions - including Islam, Judaism, Buddhism and Hinduism - decide internal matters and apply their religious laws?

On Monday, the Oklahoma Senate passed a bill intended to prevent the use of foreign law in state courts. The bill contains language from model legislation designed to limit the use of sharia, or Islamic law. A new interactive map details similar bills introduced or enacted in 32 states between 2010 and 2012.

On Feb. 1, the U.S. Department of Health and Human Services released new rules for how the Patient Protection and Affordable Care Act's contraception mandate applies to religious nonprofits, including houses of worship, schools and hospitals. Church-state law scholars Ira C. Lupu and Robert Tuttle explain the new rules and the legal arguments that religious groups might make.

During the past 35 years, federal courts, particularly the U.S. Supreme Court, have superseded states as the driving force in crafting abortion policy.

In a July 2012 Pew Research Center survey, two-thirds of American adults say churches and other houses of worship should not come out in favor of one candidate over another during political elections. 

During every election cycle, many churches and other religious groups find themselves wondering what role, if any, they can play in the political process. "Preaching Politics From the Pulpit" explains the IRS limits on political activity by nonprofit, tax-exempt organizations. An accompanying graphic shows that Americans continue to be wary of church involvement in partisan politics.