Andrew Johnson (29 December 1808 - 31 July 1875) was the seventeenth President of the United States, serving from April 1865 to March 1869 following the assassination of Abraham Lincoln. A Democrat who had been placed on the National Union ticket as a gesture of wartime unity, Johnson presided over the first phase of Reconstruction - the period in which the federal government attempted to reintegrate the Confederate states and define the legal and civic status of four million formerly enslaved people. His tenure is most frequently assessed in relation to his conflicts with the Radical Republican Congress, his vetoes of Reconstruction legislation, and his impeachment by the House of Representatives in 1868. Historians disagree substantially about whether Johnson represented a principled constitutional conservatism, a failure of political leadership, or an active obstacle to the civil and legal incorporation of African Americans into postwar citizenship. For historical background, see andrew-johnson-history.

Johnson's presidency is among the most studied and contested in American historiography. The broad outlines of his record are not in dispute: he issued broad pardons to former Confederates, vetoed the Civil Rights Act of 1866 and multiple Freedmen's Bureau bills (both subsequently overridden), opposed the Fourteenth Amendment, and favored rapid restoration of the Southern states with minimal federal conditions. He was impeached by the House on eleven articles centered on his removal of Secretary of War Edwin Stanton in alleged violation of the Tenure of Office Act, and acquitted by the Senate by a single vote.

Where historians diverge is in their interpretation of these facts. Early-twentieth-century scholarship, associated with the Dunning School, generally portrayed Johnson as a principled defender of constitutional limits against congressional overreach. Mid- and late-twentieth-century revisionism largely inverted this view, casting Johnson as a racist obstructionist whose policies sabotaged a viable path to meaningful Reconstruction. More recent scholarship has complicated both pictures by examining Johnson's Jacksonian ideological formation, his class-based animus toward Southern planters (which did not translate into support for freedpeople), and the structural and political constraints facing any executive in his position.¹⁾

The Freedmen's Bureau and its relationship to Johnson's vetoes is treated at Freedmen's Bureau.

Constitutional conservative defender of executive prerogative Some historians and legal scholars have argued that Johnson's resistance to congressional Reconstruction reflected a coherent, if ultimately unsuccessful, interpretation of the separation of powers and the constitutional limits on Congress's authority over restored states. On this reading, his vetoes were matters of principle rather than racial animus. See andrew-johnson-constitutional-defender-viewpoint.

Racist obstructionist who undermined Reconstruction The dominant view in contemporary historiography holds that Johnson's personal racial views - documented in his own speeches and correspondence - drove his policy choices in ways that materially harmed freedpeople and foreclosed more durable Reconstruction outcomes. See andrew-johnson-reconstruction-obstructionist-viewpoint.

Tragic political failure A mediating interpretation emphasizes Johnson's political incompetence and temperamental inflexibility over ideological commitment. On this view, a more skilled executive might have negotiated a durable compromise between congressional Republicans and the South; Johnson's rigidity made conflict inevitable. See andrew-johnson-political-failure-viewpoint.

Jacksonian populist out of his historical moment Some scholars emphasize Johnson's formation in Jacksonian democracy - its hostility to aristocracy, its states'-rights commitments, its white productivist ideology - as the key to understanding his presidency. His worldview was coherent within its own framework but poorly suited to the post-emancipation political landscape. See andrew-johnson-jacksonian-viewpoint.

Impeachment of 1868 Johnson's removal of Secretary of War Edwin Stanton triggered impeachment proceedings whose constitutional legitimacy, political motivation, and long-term implications for executive power remain debated. See andrew-johnson-impeachment-controversy.

Pardon policy toward former Confederates Johnson's sweeping amnesty proclamations, which restored property rights and political standing to most former rebels with minimal conditions, are disputed as to their legal authority, their practical consequences for freedpeople and Unionists, and their relationship to the eventual collapse of Reconstruction. See andrew-johnson-pardon-policy-controversy.

Veto of the Civil Rights Act of 1866 Johnson's veto of the Civil Rights Act, overridden by Congress, raised questions about the constitutional basis of federal civil rights protections that were not fully resolved until the Fourteenth Amendment was ratified; his stated legal reasoning remains contested. See andrew-johnson-civil-rights-veto-controversy.

• andrew-johnson-history - Historical background
• andrew-johnson-impeachment-controversy - The 1868 impeachment proceedings
• andrew-johnson-pardon-policy-controversy - Amnesty and pardon policy
• andrew-johnson-civil-rights-veto-controversy - Veto of the Civil Rights Act of 1866
• andrew-johnson-constitutional-defender-viewpoint - Viewpoint: constitutional conservative
• andrew-johnson-reconstruction-obstructionist-viewpoint - Viewpoint: Reconstruction obstructionist
• andrew-johnson-political-failure-viewpoint - Viewpoint: political failure
• andrew-johnson-jacksonian-viewpoint - Viewpoint: Jacksonian ideologue
• andrew-johnson-reconstruction-debate - Debate: could Reconstruction have succeeded under different executive leadership?
• andrew-johnson-impeachment-constitutional-debate - Debate: constitutional legitimacy of the Tenure of Office Act impeachment
• Reconstruction - Main topic: Reconstruction
• Freedmen's Bureau - Main topic: Freedmen's Bureau
• Abraham Lincoln - Main topic: Abraham Lincoln
• Radical Republicans - Main topic: Radical Republicans