The framers borrowed the pardon power from the English king's prerogative of mercy. Alexander Hamilton argued in Federalist No. 74 that a single person would be best suited to temper the law's harshness, and that a well-timed pardon could restore calm after a rebellion. Presidents have used the power for both purposes, from forgiving rebels to correcting excessive sentences, and sometimes for reasons critics consider self-serving.
This guide explains what the power covers, how clemency decisions are made, its limits, and the history and debate surrounding it.
Because Congress cannot limit the power by statute, most proposals to restrict it would require a constitutional amendment, such as barring pardons for family members, the President's own staff, or the President. Other proposals would require more disclosure or a role for an advisory board. Defenders of the power say mercy must remain flexible and that political accountability through elections is the proper check.
A full pardon forgives the offense and restores rights such as voting and holding office under federal law, though it does not erase the conviction. A commutation reduces a sentence, often freeing a prisoner, without forgiving the crime. Most petitions go to the Justice Department's Office of the Pardon Attorney, which reviews them against standards such as time since the sentence and acceptance of responsibility and sends recommendations to the White House. Presidents are free to bypass that process, and many high-profile grants have done so.
The pardon clause is one of the broadest powers the Constitution gives the President. It applies to federal crimes, including military offenses, and can be exercised at any time after a crime is committed, before, during, or after prosecution. The Supreme Court has held that Congress cannot restrict it, and the only express limit is that a pardon cannot stop an impeachment.
Pardons of allies, donors, and relatives have drawn criticism across parties, including Bill Clinton's 2001 pardon of a fugitive financier. In December 2024 and January 2025 the outgoing President pardoned his son and issued preemptive pardons to family members and officials, and on his first day in January 2025 the incoming President pardoned or commuted the sentences of about 1,500 people charged in connection with January 6, 2021. Supporters of each said the pardons corrected unfair or politicized prosecutions, while critics said they undermined accountability.
Pardons do not cover state crimes, so a pardoned person can still be prosecuted by a state for the same conduct, and they do not erase civil liability. In Burdick v. United States in 1915, the Court said accepting a pardon carries an imputation of guilt, and a pardoned witness cannot invoke the Fifth Amendment for the pardoned offense. Whether a President can pardon himself, and whether a pardon granted as part of a crime such as bribery is valid, have never been decided.
George Washington pardoned leaders of the Whiskey Rebellion in 1795. Andrew Johnson granted amnesty to most former Confederates. Gerald Ford pardoned Richard Nixon in 1974 for any crimes committed in office, a decision many historians believe hurt Ford in the 1976 election. Jimmy Carter pardoned Vietnam-era draft evaders in 1977, and Barack Obama commuted more than 1,700 sentences, mostly for nonviolent drug offenses.
See the full range of presidential tools in presidential powers explained, compare another check on officials in impeachment explained, or explore immunity in presidential immunity explained.