An attorney who represented the wife of former U.S. Sen. Alfonse D’Amato in the couple’s high-profile divorce has sued several judges and law firms, including Arnold & Porter Kaye Scholer, accusing them of defaming him and driving a wedge between him and his former client.

Thomas Liotti, who until recently represented attorney Katuria D’Amato in divorce proceedings and litigation against her husband, filed an amended complaint in Nassau Supreme Court on Wednesday that accused Alfonse D’Amato and his lawyer, James Catterson of Arnold & Porter, a former judge in New York’s Appellate Division, First Department, of filing false misconduct claims against him.