What if the confederates could not renounce their claim on the US because America would invade Cuba if they did?
China will not allow them to renounce their claim, to do so would imply that Taiwan is not Chinas.
Because that’s what Taiwan has to go through, so most people say keep the status quo because it’s better than pissing of China and them starting WW3 over the island.
You do know we are not all Americans.
And not to mention people can fight for multiple things at once.