The Justice Department is trying to stop a school vouchers program in Louisiana that attempts to help families send their children to independent schools instead of under-performing public schools.

The agency wants to stop the program, led by Republican Gov. Bobby Jindal, in any school district that remains under a desegregation court order.

In papers filed in U.S. District Court in New Orleans, the agency said Louisiana distributed vouchers in 2012-13 to roughly 570 public school students in districts that are still under such orders and that “many of those vouchers impeded the desegregation process.”

The federal government argues that allowing students to attend independent schools under the voucher system could create a racial imbalance in public school systems protected by desegregation orders.