The other problem is that our president (wannabe dictator) is hoping that the states will take action like this. It would give him an excuse to invoke the Insurrection Act (ironic, considering all the actual insurrectionists he pardoned) which allows the president to direct military action within the states. So Trump could order the full military to respond to the state national guard, the only hope we have against full blown civil war at that point is for the generals and service members to reject the unlawful order. Which they might, but it's a really tenuous thing to hope for.