In Part 3 of our Andrew Johnson series, the constitutional fight turns into open warfare. Judge Stephen J. Sfekas follows Johnson's escalating clash with Congress over Reconstruction, control of the Army, Ulysses S. Grant, Edwin M. Stanton, and the Tenure of Office Act, while also unpacking what "high crimes and misdemeanors" actually meant to the framers. As Johnson overplays his hand, Stanton refuses to leave, Lorenzo Thomas botches the president's order, and the crisis barrels toward impeachment.