My theory on what has changed is Trump himself.
Who else in this country has the resources to tell those who would threaten him to go take a hike?
It may be tinfoil, but it may be not, that all these state legislatures get their eligibility bills right up to the wire, then the sponsors and the other supporters just kinda fade away.
Trump might be doing Hillary’s dirty work.
Perhaps Trump is working with the Hillary. I don’t think he really wants to be president, but he is in a position to have fun and get face time which is what he loves.