While the powers proposed by the committee of detail were under consideration, Mr. Charles Pinckney introduced several topics designed to supply omissions in their report, which were thereupon referred to that committee. The purpose of one of his suggestions was to provide, on the one hand, that funds appropriated for the payment of public creditors should not, during the time of such appropriation, be diverted to any other purpose; and, on the other hand, that Congress should be restrained from establishing perpetual revenues. Another of his suggestions contemplated a power to secure the payment of the public debt, and still another to prevent a violation of the public faith when once pledged to any public creditor.[233] Immediately after this reference, Mr. Rutledge moved for what was called a grand committee,[234] to consider the expediency of an assumption by the United States of the State debts; and after some discussion of the subject, such a committee was raised, and Mr. Rutledge's motion was referred to them, together with a proposition introduced by Mr. Mason for restraining grants of perpetual revenue.[235] Thus it appears that the principal subject involved in the latter reference was the propriety of inserting in the Constitution a specific power to make special appropriations for the payment of debts of the United States and of the several States, incurred during the late war for the common defence and general welfare; and not to make a declaration of the general purposes for which revenues were to be raised. Both committees, however, seemed to have been charged with the consideration of some restraint on the revenue power, with a view to prevent perpetual taxes of any kind. The grand committee reported first, presenting the following special provision:--"The legislature of the United States shall have power to fulfil the engagements which have been entered into by Congress, and to discharge, as well the debts of the United States, as the debts incurred by the several States during the late war for the common defence and general welfare."[236] On the following day, the committee of detail presented a report, recommending that at the end of the clause already adopted, which contained the grant of the revenue power, the following words should be added: "for payment of the debts and necessary expenses of the United States; provided that no law for raising any branch of revenue, except what may be specially appropriated for the payment of interest on debts or loans, shall continue in force for more than ----years."[237]