The correct response is: Republicans disagreed with President Johnson's Reconstruction Plan.
After Lincoln's assassination, President Andrew Johnson's approach to Reconstruction was seen as too lenient towards the South. Many Republicans, especially those in Congress, favored a more stringent approach that included greater protections for newly freed African Americans and more severe punishments for the Southern states. This disagreement over the terms and enforcement of Reconstruction was a significant factor that led to conflict between Johnson and Congress.