Yes, you can impeach a former president. The House of Representatives can vote articles of impeachment against someone who has already left office, and the Senate has twice voted to affirm that it has jurisdiction to try a former official. No former president has ever been convicted, but the constitutional machinery works the same way it does for a sitting one, with a single important difference in what the penalties can accomplish.
What Actually Changes When the Official Has Left Office
The basic structure is unchanged. The House impeaches by simple majority under its “sole Power of Impeachment” in Article I, Section 2.1Cornell Law Institute. The Power of Impeachment Overview The Senate then tries the case under its “sole Power to try all Impeachments” in Article I, Section 3, with conviction requiring a two-thirds vote of the senators present.2Legal Information Institute. U.S. Constitution Annotated Article I Section 3 – Clause 6 Impeachment Trials
The one procedural change is who presides. When a sitting president is on trial, the Chief Justice of the United States takes the chair. When the person on trial is a former president, that duty falls to the Senate’s president pro tempore. That is what happened in February 2021, when Senator Patrick Leahy presided over the second impeachment trial of Donald Trump, whose term had ended on January 20.
The Jurisdictional Argument
The Constitution does not say in so many words whether the Senate keeps jurisdiction after the accused leaves office, and the text points in two directions.
The argument against jurisdiction leans on Article II, Section 4, which says officials “shall be removed from Office on Impeachment for, and Conviction of” high crimes and misdemeanors.3LII / Legal Information Institute. President Donald Trump and Impeachable Offenses If removal is the point of the exercise, there is nothing left to remove once the term ends. Trump’s defense in 2021 argued exactly that: removal is a “condition precedent” to disqualification, and neither penalty can stand on its own.4Cornell Law Institute. Doctrine on Impeachment Judgments
The argument for jurisdiction rests on the Constitution’s second penalty, disqualification from holding future federal office. Read the other way, that penalty would be a dead letter if a president could escape it by resigning or by simply running out the clock. The House managers in Trump’s second trial framed removal and disqualification as distinct consequences, so the expiration of one does not erase the other.5Constitution Annotated. Offices Eligible for Impeachment
No court has ruled on the question, and no court is likely to. The Supreme Court held in Nixon v. United States (1993) that how the Senate conducts an impeachment trial is nonjusticiable, meaning the Senate’s own view of its jurisdiction is effectively the last word.6Legal Information Institute. Senate Practices in Impeachment
How the Senate Has Voted
The Senate has twice concluded, on the record, that it has jurisdiction over a former official.
The 1876 case involved William Belknap, who resigned as Secretary of War minutes before the House was scheduled to vote on articles of impeachment. The House impeached him anyway, and the Senate ruled that it retained jurisdiction. Belknap was acquitted, but the vote against him was a majority; it fell short only of the two-thirds threshold. Several senators who voted to acquit said openly that they did so because they believed the Senate lacked jurisdiction, not because they thought his conduct was acceptable.7U.S. Senate. Impeachment Trial of Secretary of War William Belknap, 1876
The 2021 case involved Trump, impeached by the House on January 13 while still in office and tried after his term ended. The Senate voted 56–44 that it had jurisdiction, then voted 57–43 to convict, again short of two-thirds. He was acquitted.
Other officials, including Judge George English in 1926 and Judge Samuel Kent in 2009, resigned before their Senate trials, and the Senate dismissed those proceedings without ruling on jurisdiction. So the affirmative precedent runs one way, in favor of jurisdiction, but the underlying constitutional question has never been settled.
What Conviction Would Actually Do
Two penalties are available on conviction. The first is removal from office, which is automatic. For a former president, removal is moot.
The second is disqualification from holding any future federal office, including the presidency.8Constitution Annotated. Article 1 Section 3 Clause 7 Disqualification is not automatic. After a conviction, the Senate holds a separate vote on whether to impose it, and that vote requires only a simple majority of senators present, not the two-thirds needed to convict.9Legal Information Institute. Overview of Impeachment Trials
That is the practical stake in trying a former president. Without the disqualification vote, the proceeding is symbolic. With it, a majority of the Senate can permanently bar someone from federal office, including a future run for the White House.
What a Convicted Former President Would Lose
A president removed through impeachment also loses the ordinary benefits of ex-presidency. The Former Presidents Act provides office space, staff, and a pension, but it defines “former president” as someone whose service terminated “other than by removal pursuant to Section 4 of Article II,” the impeachment clause.10National Archives. Former Presidents Act A president removed by impeachment falls outside that definition and does not qualify for those benefits.
Secret Service protection is different. Under 18 U.S.C. § 3056, the Secret Service is authorized to protect “former Presidents and their spouses for their lifetimes,” with no exclusion for presidents removed via impeachment.11Office of the Law Revision Counsel. 18 U.S. Code 3056 – Powers, Authorities, and Duties of United States Secret Service Because that statute uses “former Presidents” without borrowing the narrower Former Presidents Act definition, legal scholars have concluded protection would likely continue. The point has never been tested, because no president has ever been convicted.
Impeachment Does Not Replace Criminal Prosecution
Impeachment is a political process, and the Constitution keeps it separate from the criminal courts. Article I, Section 3, Clause 7 limits impeachment penalties to removal and disqualification but adds that “the Party convicted shall nevertheless be liable and subject to Indictment, Trial, Judgment and Punishment, according to Law.”12Legal Information Institute. Overview of Impeachment Judgments
The reverse holds as well. Acquittal in an impeachment trial does not block criminal charges, and a former president who was never impeached, or was impeached and acquitted, remains subject to ordinary criminal prosecution for the same conduct. The two processes ask different questions and reach different conclusions on different standards of proof.