As an employee, I serve at the will of my employer and may be terminated from their service at their pleasure or any reason.
Why is a non-citizen of a country afforded an infinite legal process to stay in a country? Why can a country be unable to expel any non-citizen, for any reason, at their pleasure?
Because they are not a country, they are just a member state of the EU and the UN. They are not free to think or act in their own interest.