MADISON, Wis. (AP) — Six states have filed a new lawsuit against the Obama administration over the Affordable Care Act.

The complaint that Texas, Wisconsin, Kansas, Louisiana, Indiana and Nebraska filed Wednesday in the Northern District of Texas takes issue with the Health Insurance Providers Fee assessed to health insurers to cover federal subsidies.

The lawsuit says nothing in the Affordable Care Act's language provided clear notice that states would have to pay the fee.

The suit seeks an injunction against the administrative rule that says states are responsible for the fee and others. It also asks for states to be refunded for what they've already paid.

A statement from the attorney general's office says Wisconsin spent more than $23 million in such fees in 2014 and 2015.

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