After the close of the war, the tariff, among other things, seemed to many to require an overhauling. Justin S. Morrill, a member of the House Committee on Ways and Means, and one of the framers of the act of 1864, argued in favor of the protective system although he warned his colleagues: At the same time it is a mistake of the friends of a sound tariff to insist upon the extreme rates imposed during the war, if less will raise the necessary revenue.... Whatever percentage of duties were imposed upon foreign goods to cover internal taxes upon home manufactures, should not now be claimed as the lawful prize of protection where such taxes have been repealed.... The small increase of the tariff for this reason on iron, salt, woolen, and cottons can not be maintained except on the principle of obtaining a proper amount of revenue. Sentiment was strong against the tariff in the agricultural parts of the West and especially in those sections not committed to wool-growing. Great personal influence was exerted on the side of "tariff-reform" by David A. Wells, a painstaking and able student of economic conditions who was appointed special commissioner of the revenue in 1866. As a result of his investigations he became converted from a believer in protection to the leader of the opposition, and his reports had a considerable influence in the formation of opinion in favor of revision. The American Free Trade League was formed and included such influential figures as Carl Schurz, Jacob D. Cox, Horace White, Edward Atkinson, E.L. Godkin, editor of _The Nation_, and many others. William B. Allison and James A. Garfield, both prominent Republican members of the House, were in favor of downward revision. In 1867 a bill providing for many reductions passed the Senate as an amendment to a House bill which proposed to raise rates. Far more than a majority in the House were ready to accept the Senate measure, but according to the rules it was necessary to obtain a two-thirds vote in order to get the amended bill before the House for action. This it was impossible to do. Nevertheless, the wool growers and manufacturers were able "through their large influence, persistent pressure and adroit management" to procure an act in the same session which increased the duties on wool and woolens far above the war rate. In 1869 the duties on copper were raised, as were those on steel rails, marble, flax and some other commodities in 1870.