It was claimed that a tax on banks interfered with vested rights. I said that all taxes that were levied by the government were to maintain vested rights, liberty and life. All these corporate franchises were held subject to the power of taxation in Congress, which was sometimes necessary to be exercised in the most potent manner in order to maintain the government. The state could not, by an act of incorporation, place their property beyond the power of Congress. The only question was what rate of taxation ought to be adopted. The rate proposed--two per cent.--I insisted was not too high, because it was only one-third of the profit derived from the issue of paper money without interest, the principal of which was not paid in coin. I stated distinctly that the purpose of the bill was not merely to levy a reasonable tax on the banks, but also to induce them to withdraw their paper, in order to substitute for it a national currency. I then reviewed in considerable detail the history of our currency legislation, from the act chartering the first bank of the United States to the beginning of our Civil War, showing the view taken by the most eminent statesmen of our country in favor of the establishment of uniform national currency as the highest object of legislation. Mr. Madison said in his message: "It is, however, essential to every modification of the finances that the benefits of a uniform national currency should be restored to the community. The absence of the precious metals will, it is believed, be a temporary evil; but, until they can again be rendered the general medium of exchange, it devolves on the wisdom of Congress to provide a substitute which shall equally engage the confidence and accommodate the wants of the citizens throughout the Union."