The reason – the ONLY reason this is being put forth now – is because even the dip$hit idiots in Washington can see that there is a good chance that Trump will be the next President. This is meant to lock him out of options for dealing with the border.
I think Trump is going to have to take the Andrew Jackson approach to governance – “The Supreme Court has ruled – let THEM enforce their decision.” Frankly, there probably is no other way to handle it, as the Supes have FAR overstepped their boundaries for FAR too long.
If such a state develops, I’m good with that. It’s a lot better than the alternative, which would be to give up.