Also, on tour comment that you are “the Church doesn’t have any power beyond Vatican City, and that countries don’t have to rely on an alliance with the Vatican in order to succeed among its equals in the world.”
Though I disagree with this, I would like to see, rather, your rebuttal to the following:
The sacred ministers of the Church and the Roman pontiff are to be absolutely excluded from every charge and dominion over temporal affairs. (Sec. V Num. 27 Syllabus of Errors)
Well…I don’t have a rebuttal to the above. Let me think about them a bit and get back to you

Why do you disagree with the above? So that we are on the same page.
I understand that you do not mean for the total abolition of the Papal State and to return to the time before the Lateran Treaty and after the Fall of Rome (1870), correct? These are all directly from the Syllabus of Modern Errors. Please feel free to search them on your own, there is about 80 condemnations in the Syllabus and some are quite prevalent today - even in our Holy Catholic Church!
I’ve never even heard of “Syllabus of Modern Errors”.
I also ask for evidence as to your claim that the Congregation for the Doctrine of the Faith lacks real authority, because I am not sure if this is simply an opinion or if you have evidence behind it.
Just so we’re on the same page…what kind of authority does the Congregation for the Doctrine of Faith have exactly? It can’t enforce any “laws” and there are no consequences for breaking Church “laws”. In the past, the Church was able to enforce Catholic laws because the secular government incorporated Church law into secular law. So, breaking Church law, was also breaking secular law, and was punishable by the secular authorities. Today, there are no countries that make it a civil crime by breaking Church laws, and certainly the US doesn’t. So, I’m kind of confused. And the reason why I am confused is that I don’t see the Church as having any more authority than people give it. When the Church lays down rules and laws, people in choosing to be Catholic and in Communion with the Church, obey the rules. If they don’t obey the rules, there are no ramifications.