So since then the modern interpretation of doing it became the majority meaning.
His ending on the question "Why pardon?":
"Pardon is next justified as a means of correcting miscarriages of justice. It is, however, for the courts and not the executive to correct miscarriages of justice, as British legislation recognises. Pardon is then justified as a means of recognising a prisoner’s reformation. But this is the function of parole. It is an argument against long sentences imposed without the possibility of parole, but not an argument for giving an unfettered dispensing power to the executive. Reference is made to cases in which prosecutions have been initiated, long after the offence, of persons who (one infers) have led blameless lives in the meantime. Sir James Stephen cites a case in which a man was prosecuted in 1863 for stealing a leaf from a parish register in 1803. But he goes on to record that the grand jury threw out the bill, as one would hope; nowadays, an application alleging abuse of process would be made.
A more persuasive ground of justification is that based on a change in exterior circumstances. There have been many occasions in British and American history in which it has been judged desirable, in the interests of social harmony and reconciliation, to offer conditional forgiveness to those convicted of certain crimes: as after the 1745 rebellion in this country, during and after the American Civil War, and, most recently, in relation to the Troubles in Northern Ireland. There is, I would readily accept, a role for such amnesties. But they should be granted on terms carefully considered and defined in statute, as was done in Northern Ireland, and not at the undirected discretion of the executive. Lastly, pardon is justified as a means of inducing criminals to testify against their accomplices. It is sometimes necessary or expedient to procure such testimony. But there is no need for a pardon: all that is needed is a clear undertaking by the prosecuting authority not to prosecute, which the courts will enforce.
I see very little scope for the royal prerogative of mercy in Britain today. Even the early release of prisoners to relieve problems of prison overcrowding is governed by statute, as it should be. The contrast between our law and that of the United States, as they now respectively stand, appears to be stark. The contrast prompts three comparative reflections.
First, the American approach to the presidential pardon power, as expounded even in the most recent cases, highlights the tenacity with which the courts have adhered to an originalist view of the Constitution. There is no trace in this context of the ‘living instrument’, ‘living tree’ approach to constitutional interpretation, allowing for organic development over time. Clause 1 of Section 2 of Article II of the Constitution means, subject to the impeachment variation, what the royal prerogative of pardon meant in England in 1787, and nothing less.
Second, the comparison highlights the literalness with which American lawyers tend to interpret their constitution. The view that the president can lawfully exercise the power to pardon himself depends on the absence, in the text, of anything to suggest that he may not. If, however, to revert to my earlier example, Blair had procured an exercise of the royal prerogative to pardon him for selling honours, the suggestion that this was a lawful exercise of power would be laughed out of court. So it would if the pardon had, formally, been procured by another minister. It was not suggested in
M v. Home Office (1992) that the home secretary, if convicted and punished for contempt, could rely on the royal prerogative to pardon himself.
Third, and perhaps anomalously, the British law on this subject would seem to be much closer than the American to the ideals that inspired the American Revolution. The colonists then rejected what they saw as the overweening, unaccountable, all but absolute, power of the English king, replacing it with a republican democracy governed by law. Yet whereas here the royal prerogative of pardon has virtually withered away, the presidential power survives apparently intact. A president may no doubt be subject to political constraints, and he is potentially subject to impeachment, a fate which befell Governor Walton of Oklahoma, guilty of wrongful and corrupt misuse of the pardon power, in 1923. But the risk of impeachment must depend on the political composition of the legislature; an exercise of the pardon power may be abusive but nonetheless politically popular; and impeachment in the United States involves removal and disqualification from holding office, somewhat ineffective deterrents to a president nearing the end of his term. The anomaly remains that an unfettered power directly bearing on the administration of justice should be entrusted to the executive, even at the highest level, with no obligation to give reasons and, it would seem, no possibility of effective legal challenge."
So in other words he thinks the power of pardon in the US is a bad copy of the British one and an anomaly, because there is no way of legal challenge.
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