Lincoln was one of our greatest Presidents.
Lincoln, in order to invade eleven Confederate states that had quite legally seceded from the Union, also violated the Fifth Amendment by depriving slaveholders of property without due process of law via the Emancipation Proclamation (I don't favor slavery but Lincoln had no constitutional justification), initiated the bloodiest war in American history for ilegal purposes, sent Sherman to lay waste to persons and property throughout much of the South, initiated an utterly unconstitutional military draft, and an utterly unconstitutional (as SCOTUS later found) personal income tax, subjected NYC to naval bombardment during the draft riots, and smashed the presses and jailed the editors of newspapers in the North opposed to his war.
Debatable.