The United States Constitution is a kludge to manage the way that 13 distinct provinces would not like to surrender their sway however the Articles of Confederation had been a flounder. It's a bargain acquired by need.
It is by all accounts well known nowadays to give a great deal of credit to the Iroquois, however it's not as though they developed the government structure; it has existed in Switzerland for a considerable length of time.
The answer is Theodore Roosevelt