Incorrect.What does the Constitution have to say about defending the sovereignty of the country?
In 1787 it was NOT understood that the federal government was going to represent a the government.
It was then understood that thirteen sovereign states were forming a federal union with SPECIFICALLY ENUMERATED POWERS.
None of the aliens come here with the intention to take over and harm us.
Prior to 1965 we had open borders with Mexico and Canada and there was no harm caused.
.
The authority of the Federal government and its supremacy was given directly by the people, not the states, who are subordinate to the Federal government. Martin v. Hunter’s Lessee (1816).