WICHITA, Kan. (AP) -- The American Civil Liberties Union wants a federal judge to strike down a Kansas law restricting insurance coverage of abortions.

In a court filing Friday, the organization outlines for the first time the impact of a statute passed last year prohibiting abortion coverage in general health plans. Patients who want such coverage must buy special riders.

The ACLU says before the law was passed, abortion coverage was offered in general health plans by the insurance companies that accounted for more than 70 percent of the Kansas market. But not all have decided to offer abortion riders, and one says it's not expected that many, if any, riders will be sold.

The ACLU contends the law makes it difficult to obtain abortions. The state says it will file its own motion later.