Oklahoma lawmakers are asking voters to weigh in on a proposal that would ban local courts from considering Shariah or other international law in their rulings.The unusual measure calling for an amendment to the Oklahoma Constitution was approved in late May by the state Senate, sending the issue to voters in the fall in the form of a ballot question.Though the question's supporters have not pointed to any specific outbreak of Shariah, or Islamic law, being considered in the U.S. judicial system, they describe it as an encroaching threat. State Rep. Rex Duncan, author of the measure, has called the ballot question a "preemptive strike" against Shariah coming to his state....