HKB
A FIFTH class of provisions in favor of the federal authority consists of the following restrictions on the authority of the several States:
The prohibition against treaties, alliances, and confederations makes a part of the existing articles of Union; and for reasons which need no explanation, is copied into the new Constitution. The prohibition of letters of marque is another part of the old system, but is somewhat extended in the new. According to the former, letters of marque could be granted by the States after a declaration of war; according to the latter, these licenses must be obtained, as well during war as previous to its declaration, from the government of the United States. This alteration is fully justified by the advantage of uniformity in all points which relate to foreign powers; and of immediate responsibility to the nation in all those for whose conduct the nation itself is to be responsible.
The right of coining money, which is here taken from the States, was left in their hands by the Confederation, as a concurrent right with that of Congress, under an exception in favor of the exclusive right of Congress to regulate the alloy and value. In this instance, also, the new provision is an improvement on the old. Whilst the alloy and value depended on the general authority, a right of coinage in the particular States could have no other effect than to multiply expensive mints and diversify the forms and weights of the circulating pieces. The latter inconveniency defeats one purpose for which the power was originally submitted to the federal head; and as far as the former might prevent an inconvenient remittance of gold and silver to the central mint for recoinage, the end can be as well attained by local mints established under the general authority.