Thus was a dark and gloomy prospect a second time presented to the framers of the Constitution. If, on the one side, there were States feeling themselves bound as a class to insist on certain concessions, on the other side were those by whom such concessions could not be made. The chief motive with the Eastern, and with most of the Northern States, in seeking a new union under a new frame of government, was a commercial one. They had suffered so severely from the effects of the commercial policy of England and other European nations, and from the incapacity of Congress to control that policy, that it had become indispensable to them to secure a national power which could dictate the terms and vehicles of commercial intercourse with the whole country. Cut off from the British West India trade by the English Orders in Council, the Eastern and Middle States required other means of counteracting those oppressive regulations than could be found in their separate State legislation, which furnished no power whatever for obtaining a single commercial treaty.[223] Besides these considerations, which related to the special interests of the commercial States, the want of a navy, which could only be built up by measures that would encourage the growth of the mercantile marine, and which, although needed for the protection of commerce, was also required for the defence of the whole country, made it necessary that the power to pass a navigation act should be burdened with no serious restrictions. The idea of requiring a vote of two thirds in Congress for the passage of a navigation act, founded on the assumed diversity of Northern and Southern, or the commercial and the planting interests, proceeded upon the necessity for a distinct protection of the latter against the former, by means of a special legislative check. To a certain extent, as I have already said, these interests, when regarded in their aggregates, offered a real diversity. But it did not follow that this peculiar check upon the power of a majority was either a necessary or an expedient mode of providing against oppressive legislation. In every system of popular government, there are great disadvantages in departing from the simple rule of a majority; and perhaps the principle which requires the assent of more than a majority ought never to be extended to mere matters of legislation, but should be confined to treaty stipulations, and to those fundamental changes which affect the nature of the government and involve the terms on which the different portions of society are associated together.