“If aliens might be admitted indiscriminately to enjoy all the rights of citizens at the will of a single state, the Union might itself be endangered by an influx of foreigners, hostile to its institutions, ignorant of its powers, and incapable of a due estimate of its privileges.”

How would the nation deal with say California opening its borders to Mexicans to settle en masse, enroll immediately in government assistance programs, and essentially establish a Mexican colony with allegiance to Mexican flags and Mexican culture?  Then vote themselves the money from their neighbors coffers?  The rights of man are for all people everywhere — but that does not grant the right to lay claim to others' labors, properties and ballot boxes.

Or also, what of the practice of encouraging Somalis to apply for refugee status and put them all in one voting district eventually giving them a Somali mayor, congressman, attorney general, and essentially representing Somali interests?  Not to mention that there is an intention to colonize America with Islam (it is their creed) which is not just a religion but a central government — you can't have one without the other.  When is it considered an invasion?