It appears that the people of Maryland felt some apprehension that an unrestricted power to make commercial and fiscal regulations might result in compelling vessels bound to or from Baltimore to enter or clear at Norfolk, or some other port in Virginia. The delegates of Maryland accordingly introduced a proposition, which embraced two ideas; first, that Congress shall not oblige vessels, domestic or foreign, to enter or pay duties or imposts in any other State than in that to which they may be bound, or to clear from any other State than that in which their cargoes may be laden; secondly, that Congress shall not induce vessels to enter or clear in one State in preference to another, by any privileges or immunities.[241] This proposition became the basis of that clause of the Constitution, which declares that "no preference shall be given by any regulation of commerce or revenue to the ports of one State over those of another; nor shall vessels bound to, or from, one State, be obliged to enter, clear, or pay duties in another."[242] It was while this subject of the equal operation of the commercial and revenue powers upon the different States was under consideration, that the further provision was devised and incorporated into the Constitution, which requires all duties, imposts, and excises to be uniform throughout the United States. This clause, in the final revision of the instrument, was annexed to the power of taxation.[243] The commercial power, besides being subjected to the restrictions which have been thus described, was extended to a subject not embraced in it by the report of the committee of detail. They had included in it "commerce with foreign nations, and among the several States";--meaning, by the former term, not to include the Indian tribes upon this continent, but all other communities, civilized and barbarian, foreign to the people of the United States. By the system which had always prevailed in the relations of Europeans and their descendants with the Indians of America, those tribes had constantly been regarded as distinct and independent political communities, retaining their original rights, and among them the undisputed possession of the soil; subject to the exclusive right of the European nation making the first discovery of their territory to purchase it. This principle, incorporated into the public law of Europe at the time of the discovery and settlement of the New World, and practised by general consent of the nations of Europe, was the basis of all the relations maintained with the Indian tribes by the imperial government, in the time of our colonial state, by our Revolutionary Congress, and by the United States under the Confederation. It recognized the Indian tribes as nations, but as nations peculiarly situated, inasmuch as their intercourse and their power to dispose of their landed possessions were restricted to the first discoverers of their territory. This peculiar condition drew after it two