To paraphrase Lincoln, is it true that a House Caucus divided against itself cannot stand?

.

No, healthy debate is necessary for a free society. Civil War was inevitable. Lincoln was a fatalist. The secessions were never recognized by federal government. A divided house is required for all parties to get appropriate representatives and voices. A single party system is totalitarian, similar to China's one party rule. US Constitution is oldest written constitution in the world still extant.

Correct. It's why the government shut down recently. It's why the house speaker left.