Based on your idea there is nothing the federal government could not do.
No, under my argument the federal government can do anything in Article 1, Section 8. Those are the enumerated powers. However, the entire federal government including the Constitution on which it is based, is dependent upon national sovereignty. Without borders, we are not a nation and there is no federal government or constitution.
I'm trying to figure out what has happened to you today, Rabbi... I generally agree with you on things... it seems like perhaps a liberal has sucked out your brain and replaced it with the brain of Bernie Sanders or something.