You are a major political party. You govern half of the states and at-risk populations are already moving across the country because they scramble towards a sanctuary. You are well-connected to unions, civil rights groups and other orgs about to get fucked over by the federal government. You regularly recruit tens of thousands of campaigning volunteers. You run the second-largest political fundraising network in the world. A metric fuckton of government employees from all possible backgrounds are about to get fired. The half of the country that isn't gloating over mass deportations may be at the most mobilizable moment in their entire life. And there's millions of people that need protection because they are about to get hit by the seething rage of a fascist government.

So yeah, what could you possibly do?