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?
2 would mostly only happen in red states. The rest mostly know how to cooperate.
And you know that California doesn’t need Canada, even less when you consider the rest of the US west coast in with it.