What do they want in their treaty? How does a government deny that God exists? This group started in the 30's by a white man and then one of his converts claimed to be God. Are you saying any group can start, claim they are God and therefore should get a treaty with the United States?
"The original Nation of Islam was founded in Detroit in the United States of America in 1930s by Wallace Fard Muhammad. Wallace Fard Muhammad (1877, 1891 or 1893- 1934?), is believed by the NOI to be “the long-awaited Messiah of the Christians and the Mahdi of the Muslims”. 
One of Fard's first disciples was Elijah Poole, whose name Fard later changed to Elijah Muhammad (1897–1975). Elijah Muhammad deified Fard by preaching that he was literally God in person."
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