Why did congress feel that reconstruction was a congressional task and not a presidential task?

Congress believed that Reconstruction was a congressional task rather than a presidential task because they viewed it as essential to the legislative authority and the balance of power within the federal government. After the Civil War, Congress aimed to establish policies that would reshape Southern society and ensure civil rights for formerly enslaved individuals, which they felt required a more comprehensive legislative approach. Additionally, tensions between Congress and President Andrew Johnson, who attempted to implement a lenient Reconstruction policy, led Congress to assert its dominance in shaping the post-war recovery and integration of the Southern states.