The only time he really meddled with Congress was when it came to the 13th Amendment, usually he was cool about following whatever Congress wanted. His old party, the Whigs, were against all the executive control Andrew Jackson tried to take when he was president. But in other matters he took control. Funny enough, Davis always complained about his lack of executive and federal control of the Confederate states is what did him and the South in. Davis only ever had one advantage that Lincoln didn't and that was the line-item veto.