“The Government of the United States has broad, undoubted power over the subject of immigration and the status of aliens. ... It is fundamental that foreign countries concerned about the status, safety, and security of their nationals in the United States must be able to confer and communicate on this subject with one national sovereign, not the 50 separate States.”

Archer, of course you are right (-; BUT :-) under fleshly philosophy of men (legal positivism most specifically) — unless it is written; it ain't so. Immigration was such an important topic and event to the several States, that authority was not given to the federal government. To my knowledge, each State operated its immigration policy(s) within the common law sovereign authority of the individuals within the State; subsequently, no State has put forth a written policy concerning immigration. The federal government (having in fact NO common law authority) usurped unconstitutional power to enact federal immigration policy.

The slick creation of the 'US citizen' via the 13th Amendment clouds the issue.  I think in actuality, state citizenship has never been revoked, just as the sovereignty of each state hasn't been revoked, just ignored (see the War Between the States).  Statism has become the de facto norm as a result.  But, yes, there are no 'common law' writs that grant the US government to manage immigration (and a whole host of other things they do like issue birth certificates from the US Treasury, etc.).