With all due respect, how can anyone make a life changing decision without first knowing the basic frame of facts. It will be akin to going to a hospital ask for an arm amputation and then after the operation is performed ask the doctor what was the condition.
Yeah, national sovereignty is under-recognized. Very selective approach. Sometimes, appealing to national sovereignty is even dishonestly mischaracterized as ‘nationalism,’ ‘isolationism,’ ‘Little Englanders,’ e.g. Brexit.