In Part 4 of our Andrew Johnson series, Judge Stephen J. Sfekas takes listeners inside the first presidential impeachment trial in American history. He follows Thaddeus Stevens, Benjamin Butler, Chief Justice Salmon P. Chase, Edmund Ross, and the Senate showdown that left Johnson in office by a single vote. Along the way, this episode shows that the real fight was not just over the Tenure of Office Act, but over Reconstruction itself, including control of the Army, enforcement of the Reconstruction Acts, and the future of Black freedom after the Civil War.