Administrators of New Jersey institutions who violate the state's conflict of interest law should be banned from appointed government service for life, Republican Sen. Anthony Bucco said Monday. Bucco introduced legislation to strengthen the law in the wake of allegations that members of the board of trustees of the University of Medicine and Dentistry of New Jersey had conflicts because they work for companies that do business with the school. ``It is unfortunate that we need to take steps to expand the definitions of what a conflict of interest is, when it should be perfectly obvious that those who engage in this type of conduct may not have the best interests of the institution at heart,'' Bucco said. The legislator's proposal also would increase penalties for those convicted of violating the law.