Capital assets ownership tax?
https://senatedemocrats.wa.gov/frame/biography/
Just tell them that they are evil if they don’t support having their pockets picked clean. That’s the usual liberal arguement as to why you should allow yourself to pay more taxes than before.
This should only embolden efforts for parts of western Washington to break away and become part of Idaho. If one state were to succeed in changing its borders in this way it would open the floodgates for a national realignment of state borders that would Balkanize the leftists areas of many states. Next domino would be Minnesota where the western half of the state would be joining the Dakotas