The constitutional issue at the heart of united states v. nixon is best described as

The watergate scandal

Explanation:

the british army and british colonist were by iroquois indians.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.