The question has been framed in the streets: is a government that impoverishes healthcare and nutrition, flouts the law, enriches its officials, imprisons babies, and kills its citizens worth the money it collects, much less the respect and obedience it demands?
Democrats have nothing to lose by shutting down the government to force the majority party to respond to these questions and the one that looms over all: what, if any, is the political and moral future of the US?
It really depends on what type of war this hypothetical civil war would be, and who would be included in each side. North Dakota has nukes, is in the North, but also is very conservative. Opposite scenario for New Mexico
Realistically, a conventional war isn’t possible these days. In digital warfare, tech hubs like NYC, DC, Cali, and Washington become the most important locations