James Blaine: “The whole contrivance was fraudulent, wicked, and in retrospect incredible.”

The States are colleagues of one another, and if some of them shall conquer the rest, and hold them as subjugated provinces, it would totally destroy the whole theory upon which they are now connected.

And if Congress shall break up the present Union by unconstitutionally putting strife and enmity and armed hostility between different sections of the country, instead of the domestic tranquility which the Constitution was meant to insure…

Under such circumstances, to send a military force into any State, with orders to act against the people, would be simply making war upon them.

You can use force only to repel an assault on the public property and aid the Courts in the performance of their duty.