Under this winding-up clause of the Constitutional enumeration of the powers of Congress, the true sense and object of which was so easy to be understood, Hamilton claimed for that body the power of authorizing by law measures of a substantive character, described by well understood names, altogether different from those employed in the enumeration, such as the incorporation of banks, &c., &c., if Congress should declare itself of the opinion that the execution of the enumerated powers would be materially aided by any such measures, reserving to Congress the right of deciding whether the proposed measure would be sufficiently useful to create the "propriety and necessity" required by the Constitution, and placing in its breast alone the final decision of every such question. The objects of the Constitution, as set forth in its preamble, were "to form a more perfect union, establish justice, insure domestic tranquillity, provide for the common defense, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity." The first of the powers of Congress, contained in the enumeration of them in the Constitution, is in the following words: "The Congress shall have power to lay and collect taxes, duties, imposts, and excises, to pay the debts and provide for the common defense and general welfare of the United States; but all duties, and imposts, and excises shall be uniform throughout the United States;"--and then follow all the other powers, to borrow money, &c.