Plea bargaining in the United States
The constitutionality of plea bargaining was established by "Brady v. United States" in 1970, although the Supreme Court warned that plea incentives which were sufficiently large or coercive as to over-rule defendants' abilities to act freely, or used in a manner giving rise to a significant number of innocent people pleading guilty, might be prohibited or lead to concerns over constitutionality. "Santobello v. New York" added that when plea bargains are broken, legal remedies exist.
Plea bargain
Plea bargaining can present a dilemma to defense attorneys, in that they must choose between vigorously seeking a good deal for their present client, or maintaining a good relationship with the prosecutor for the sake of helping future clients. However, defense attorneys are required by the ethics of the bar to defend the present client's interests over the interests of others. Violation of this rule may result in disciplinary sanctions being imposed against the defense attorney by the appropriate state's bar association.