The canonical point of view and the rule of law are seperate things. The Vatican itself here says that it does not possess temporal power.
The Vatican says that dioceses are run as sepeerate entities.
If there have been any Bishops that the Vatican has expelled, then that undermines the argument that the diocese is run locally.
If the Vatican can expel a Bishop, then they would have the power to keep a Bishop from coming from Ireland to the US.
If there have been any Bishops that the Vatican has expelled, then that undermines the argument that the diocese is run locally.
When it's convenient, the Vatican lies.
"So, then, if anyone says that the Roman Pontiff has merely an office of supervision and guidance, and not the full and supreme power of jurisdiction over the whole Church, and this not only in matters of faith and morals, but also in those which concern the discipline and government of the Church dispersed throughout the whole world; or that he has only the principal part, but not the absolute fullness, of this supreme power; or that this power of his is not ordinary and immediate both over all and each of the Churches and over all and each of the pastors and faithful: let him be anathema."Pope Pius IX, Vatican Council, Session 4, Chapter 3, #9:
Apparently since Ratzinger denied this very notion we should conclude he has just anathematized himself.