The impeachment of Andrew Johnson in 1868 stands as a critical, albeit tumultuous, moment in American constitutional history, marking the only instance prior to Bill Clinton of a president facing removal from office by the Senate. The saga was not a sudden eruption but the culmination of profound disagreements over the direction of Reconstruction following the Civil War. Johnson, a Southerner and former slaveholder who remained loyal to the Union, ascended to the presidency upon Abraham Lincoln's assassination in April 1865. His vision for readmitting Southern states starkly contrasted with the increasingly radical agenda of the Republican Congress, setting the stage for an unprecedented clash over presidential authority and the fate of the newly freed African Americans.
The root of the conflict lay in Johnson's approach to Reconstruction. Lincoln had favored a more lenient policy, but Johnson embraced it with an fervor that alarmed many in the North. He swiftly implemented his own plan, allowing Southern states to form new governments without guaranteeing Black suffrage or protecting Black civil rights. This leniency was further exacerbated by his pardons for former Confederate leaders. In response, Congress, dominated by Radical Republicans like Thaddeus Stevens and Charles Sumner, passed a series of Reconstruction Acts designed to assert federal control over the South and protect freedmen. Key among these were the Civil Rights Act of 1866 and the Reconstruction Acts of 1867, which mandated new constitutions for Southern states that included Black voting rights and barred former Confederates from political office. Johnson vetoed most of these measures, viewing them as unconstitutional overreach and an infringement on states' rights. Congress, in turn, repeatedly overrode his vetoes, demonstrating a clear power struggle and a growing distrust of the President.
The immediate trigger for impeachment was Johnson's defiance of the Tenure of Office Act, passed in March 1867. This law prohibited the president from removing certain officeholders without the Senate's consent, a clear attempt by Congress to prevent Johnson from dismissing Republican sympathizers in his cabinet. Johnson saw this as a direct assault on executive power, and in February 1868, he violated it by dismissing Secretary of War Edwin Stanton, a staunch ally of the Radical Republicans. This act provided the House of Representatives with the grounds it needed to initiate impeachment proceedings. The House voted to impeach Johnson on 11 articles, primarily focusing on his alleged violation of the Tenure of Office Act and his inflammatory rhetoric against Congress.
The subsequent Senate trial, which began in March 1868, was a highly politicized spectacle. Presided over by Chief Justice Salmon P. Chase, the proceedings lasted for nearly three months. The prosecution, led by Radical Republicans like Benjamin Butler, argued that Johnson's actions constituted high crimes and misdemeanors, undermining the very foundations of the government. The defense, on the other hand, contended that Johnson's actions were within his executive prerogative and that the Tenure of Office Act itself was unconstitutional. The outcome hinged on securing a two-thirds majority in the Senate for conviction. Despite intense pressure, seven moderate Republicans joined the 12 Democrats in voting for acquittal, narrowly defeating conviction on the first article by a single vote. Subsequent votes on the other articles also failed.
The failure to convict Johnson had significant implications. While it spared the presidency from immediate dismemberment and upheld the principle of presidential accountability, it also represented a major setback for the Radical Republicans' agenda for Reconstruction. The impeachment process itself, however, served as a powerful check on executive power, establishing a precedent for congressional oversight. It revealed the deep divisions within the nation and the precarious state of presidential authority during times of intense partisan conflict. Andrew Johnson completed his term, but his presidency was irrevocably damaged, and his legacy remains intertwined with this dramatic constitutional crisis, a stark reminder of the delicate balance of power within the American governmental system.