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
Like other common law jurisdictions, the Crown can also agree to withdraw some charges against the defendant in exchange for a guilty plea. This has become standard procedure for certain offences such as impaired driving. Note that in the case of hybrid offences, the Crown must make a binding decision as to whether to proceed summarily or by indictment prior to the defendant making his or her plea. If the Crown elects to proceed summarily and the defendant then pleads not guilty, the Crown cannot change its election. Therefore, the Crown is not in a position to offer to proceed summarily in exchange for a guilty plea.