More than 200 universities are backing the legal challenge to the Trump administration’s restrictions on international students, arguing that the policy jeopardizes students’ safety and forces schools to reconsider fall plans they have spent months preparing.

The schools signed onto court briefs supporting Harvard University and the Massachusetts Institute of Technology as they sue U.S. Immigration and Customs Enforcement in federal court in Boston. The lawsuit challenges a recently announced directive saying international students cannot stay in the U.S. if they take all their classes online this fall.

The lawsuit was filed by the attorneys general of Colorado, Connecticut, Delaware, District of Columbia, Maryland, Massachusetts, Michigan, Minnesota, Nevada, New Jersey, New Mexico, Oregon, Pennsylvania, Rhode Island, Vermont, Virginia, and Wisconsin.

The lawsuit also includes 40 declarations from institutions affected by the new rule, including 16 in Illinois: Chicago State University, Columbia College Chicago, DePaul University, Eastern Illinois University, Governors State University, Illinois State University, Loyola University of Chicago, Northeastern Illinois University, Northern Illinois University, Northwestern University, the School of the Art Institute of Chicago, Southern Illinois University-Carbondale, Southern Illinois University-Edwardsville, The University of Chicago, the University of Illinois System, and Western Illinois University.