Kansas Gov. Sam Brownback has signed a measure banning the use of Islamic law in the state, CBN News reports. The new law doesn't specifically mention sharia law, but prohibits Kansas courts and government agencies from basing decisions on foreign legal codes. Supporters of the measure, who cited cases around the country where judges or state agencies took Islamic law into account in their rulings -- say the new law reassures Kansas residents that courts will rely solely on state and U.S. laws. Muslim groups oppose the measure, arguing that it promotes discrimination and saying that it could nullify wills or legal contracts between Muslims. The Council on American-Islamic Relations (CAIR) says a court challenge is likely.