Plans by three Catholic hospital systems in Wisconsin to deny admitting privileges to doctors who perform abortions would "be in active violation of federal law," Attorney General J. B. Van Hollen's Department of Justice said in a court filing last week. Federal law "provides that hospitals accepting federal funds may not discriminate against a physician because that physician has participated in or refused to participate in abortions," the state Justice Department said in its filing in federal court. According to experts on federal law, if doctors can prove they were not granted privileges specifically because they perform the procedure, the hospital systems — Wheaton Franciscan Healthcare, Columbia St. Mary's Health System and Hospital Sisters Health System — could lose federal dollars in the form of research and public health grants.