Robert (Bob) D. Arenstein has been continuously active in the practice of law for over forty-five years in matrimonial and family law. Bob is a Fellow of the American Academy of Matrimonial Lawyers with several past executive positions, including chair of the National Legislation Committee. He is also a Fellow of the International Academy of Family Lawyers and former Vice President and Secretary of the American Chapter of that organization. He is a member of the National Panel of Marital Arbitrators of the American Arbitration Association and also a member of the Executive Committee of the Family Law Section of the New York State Bar Association.

Just to name a few of Bob’s accomplishments and credentials, he chaired the Federal Kidnapping Committee of the Academy of Matrimonial Lawyers and was liaison to ABA Parental Abduction Project. He was the Chairman of the Mentoring Committee of the International Child Abduction Attorneys Network (ICAAN), funded by the Dept. of Justice OJJDP in conjunction with ABA Center on Children and the Law and the National Center for Missing and Exploited Children. He has have been an expert witness before the United States Senate Armed Services Committee on issues relating to military pension, the House Ways and Means Committee on issues relating to child support, and before the New York State and New Jersey State Assembly's Judiciary Committees on the subject of surrogate parenting and has advised the U.S. State Department on various occasions including speaking in the North American Symposium on International Child Abduction.

Bob’s experience in the matrimonial field is extensive and varied and includes the handling of all types of matrimonial actions and proceedings in the trial and appellate courts of the State of New York and elsewhere including almost four hundred (400) cases under the Hague Abduction Convention. He has been a Lecturer at Various Institutes on Interstate and International Child Custody, including American Family Conciliation Courts National Conferences, American Bar Association's annual winter and spring meetings, American Academy of Matrimonial Lawyers, International Academy of Matrimonial Lawyers, American Association of Trial Lawyers, Hispanic Bar Association, New Jersey Continuing Legal Education Institute, COURT TV, and various other bar associations.