Twelve states have filed an amicus brief in support of the Obama administration's directive advising schools to allow transgender students to use the bathroom of their choice.

A coalition of 11 states led by Texas filed a lawsuit in May challenging the guidance. In June, the states asked the court to block the regulations, arguing that it would jeopardize safety. A second group of 10 states, led by Nebraska, have filed a similar lawsuit.

The 12 states defending the guidance are led by Washington and most have laws banning discrimination on the basis of gender identity.

They argue in their brief that protecting transgender people “creates no public safety threat and imposes no meaningful financial burden.”

“[T]heir allegations of safety risks are unsupported hyperbole, their claimed loss of federal funding is distant and avoidable, and their claims of massive renovation costs lack support in the law and the record,” the brief states.

The coalition of states making the assertions include Washington State, California, Connecticut, Delaware, Illinois, Maryland, Massachusetts, New Hampshire, New Mexico, New York, Oregon, Vermont and Washington, D.C.