A federal appeals court is considering whether Oklahoma's ban on Sharia law can stand.
A panel of judges from the 10th Circuit Court of Appeals will decide whether a lower court's ruling against the amendment is good.
Muneer Awad, an Oklahoma City Muslim, claimed the Sharia ban violates the U.S. Constitution's protection for freedom of religion. Awad has received support from other Muslims around the U.S.
On Monday, the court heard arguments from both sides and one judge asked why the ban only applies to one religion.
"The intent here was to exclude Sharia law and international law," Oklahoma Solicitor General Patrick Wyrick responded.
The judge then asked why there is any need to mention Sharia law.
"To avoid confusion," Wyrick answered.
A ballot initiative last year prevented Islamic and international law from being considered in the courts.
The measure, known as State Question 775 - the "Save Our State" amendment, was passed by 70 percent of Oklahoma voters.
More than 20 other states are considering similar bans against Sharia law.