On the principle of the propriety of vesting this power in the executive department, it would seem that the whole power of making treaties ought to be left to the President, who, being elected by the people of the United States at large, will have their general interest at heart. But that jealousy of executive power which has shown itself so strongly in all the American governments, would not admit this improvement.
Interest, sir, has a most powerful influence over the human mind, and is the basis on which all the transactions of mankind are built. It was mentioned before that the extreme jealousy of the little states, and between the commercial states and the non-importing states, produced the necessity of giving an equality of suffrage to the Senate. The same causes made it indispensable to give to the senators, as representatives of states, the power of making, or rather ratifying, treaties.1
Although it militates against every idea of just proportion that the little state of Rhode Island should have the same suffrage with Virginia, or the great commonwealth of Massachusetts, yet the small states would not consent to confederate without an equal voice in the formation of treaties. Without the equality, they apprehended that their interest would be neglected or sacrificed in negotiations. This difficulty could not be got over. It arose from the unalterable nature of things. Every man was convinced of the inflexibility of the little states in this point. It therefore became necessary to give them an absolute equality in making treaties.