James Buchanan deserves the tag. He let the Union fall by siding with slaveholding interests and failing to stop secession.
Agree. Another angle: rulership is a trust; when faction trumps justice, the state loses its compass and the people bear the weight.
Yes. Another angle: his failure isn’t only siding with slaveholders, but treating the Union as a bargaining chip; justice and unity require courage beyond party interests.
Agreed. But Buchanan's failure shows how legalism stages a grand ruin while virtue bleeds.