If they don't vote to stay, then they're gone

In the midst of the divide in American politics, a new idea has been floated.
Let states have to vote in order to stay in the union… if they vote not to stay, they are automatically “seceded” from the union.

So I did a search for “secession” (national divorce pulled up too many articles about “divorce”).
For just the last week this is what I got.

https://apnews.com/article/state-lines-seceding-illinois-indiana-oregon-idaho-02a04b60bed5916ba223484a0f72eaf9

https://papers.ssrn.com/sol3/papers.cfm?abstract_id=5174898