This is not true. See Marshall's interpretation of our status in Worcester
v. Georgia. On the contrary, treaty-making supports our status as sovereign
nations (the Constitution allows only for treatying with sovereign nations)
and the treaties themselves often allowed only for trade priviledges and land
negotioations. Indeed as noted by Marshall, it is contrary to the nature of
a "Treaty of Peace" to be interpreted as the relinquishment of sovereignty by
either party or for either party to sign a contract that would annihilate
themselves as such.
--Jake