[giobruno]

I researched the "Iroquois Influence" idea in grad school and found it to be mostly bunk; the sources for the US model of government were widely drawn, but they were overwhelmingly European and Classical models. Some founders noted the Iroquois (Franklin, most prominently) but not as a primary model. As I recall, the evidence wasn't ignored, it simply wasn't very convincing. I recall some strong arguments were made from many prominent historians of US History.
Please note what Ms. Sturgis does for a living; she guards her turf more closely than other historians guard theirs.

[Elsie]

Merely compare what was in THEIR system and compare it to OURS.

Similarities abound!