A coalition of states and advocacy organizations sued the Trump administration on Wednesday over its rollback of school nutritional standards championed by the former first lady Michelle Obama that required students be served healthier meals.

In lawsuits filed Wednesday, the groups claim that the administration illegally issued rules last year that weakened requirements that school meals contain less salt and more whole grains. The rules were part of the Healthy, Hunger-Free Kids Act of 2010, a crucial part of Mrs. Obama’s signature “Let’s Move” campaign.

The suits claim the Agriculture Department violated the Administrative Procedure Act, issuing its rules with little public notice and no reasoned explanation and against overwhelming opposition from the public. The courts have already struck down a series of high-profile rule changes by the administration for the same reason.

The coalition of states, led by New York, filed suit in the Federal District Court for the Southern District of New York. Other states that signed on to the suit include California, Illinois, Minnesota, New Mexico, Vermont and the District of Columbia. Additionally, two advocacy organizations, Center for Science in the Public Interest and Healthy School Food Maryland, filed a similar complaint in Federal District Court in Maryland.