I know that Jonathan Swift appealed to the authority of an American in A Modest Proposal:
Originally Posted by Detective Mike Logan
I have been assured by a very knowing American of my acquaintance in London, that a young healthy child well nursed is at a year old a most delicious, nourishing, and wholesome food, whether stewed, roasted, baked, or boiled; and I make no doubt that it will equally serve in a fricassee or a ragout.
which was first published in 1729.
A Modest Proposal by Jonathan Swift