That's an extremely poor analogy.
Here is a better one :
The US and Canada decide to merge and become one country, with Canada becoming a semi-autonomous province of the US.
30 years later the US gifts the state of Wisconsin to the Canadian Province of the USA. No one cares because it's still the USA.
Then 30 years after that, the US can't afford Canada's social programs so Canada - along with the Wisconsin - becomes a separate country again.
Then 30 years after that, with Canada-Wisconsin on our border, Canada's democratically elected gov't is overthrown and run out by "protesters", and a new unelected Canadian Gov't decides to become close allies of China - a known opponent / enemy of the US.
One of the first things this new "unelected democracy" does is tell Wisconsinites that they can't have media in English and their local Gov't functions will all be done in French.
People in Wisconsin, still being mostly "Americans" speaking English, ask the US to take them back.
What would you do?