"'The commerce of the German empire is in continual trammels from the multiplicity of the duties which the several princes and states exact upon the merchandises passing through their territories, by means of which the fine streams and navigable rivers with which Germany is so happily watered are rendered almost useless.' Though the genius of the people of this country might never permit this description to be strictly applicable to us, yet we may reasonably expect, from the gradual conflicts of State regulations, that the citizens of each would at length come to be considered and treated by the others in no better light than that of foreigners and aliens."
- Federalist Paper No. 22