In 1993, the State of Wisconsin passed a school voucher law that offered low-income families up to $5,000 to attend any nonreligious school – public or private – in the city of Milwaukee. Over time, the program was expanded to include religious schools as well. That triggered a lawsuit in which, in 1998, the Wisconsin Supreme Court ruled the school-voucher plan did not violate the First Amendment’s church-state separation clause. The U.S. Supreme Court declined to review the case, allowing the Wisconsin Supreme Court ruling to stand.