Sumner appears to have had in mind, even before he became senator, a comprehensive treatment of American slavery, and a thorough exposition of its antagonism to Christianity and civilization, unembarrassed by the discussion of any pending measure. He was prompted to meet the general issue at this time by the bolder attitude of Southern members of Congress during the session,—like Hammond of South Carolina, Hunter and Mason of Virginia, Brown and Jefferson Davis of Mississippi,—who had not hesitated to defend the institution as a normal condition of society, beneficial to both races, even ennobling to the white race, and the just basis of republican government; presenting an attitude altogether changed from that of Southern statesmen at the close of the last and during the first third of the present century, who confined themselves to apologies and regrets. Davis was then the Democratic leader of the Senate, and his resolutions, which he introduced February 2, affirming the sanctity of slave property in the territories, were passed May 24 and 25 by a vote of two to one; his resolution approving the fugitive-slave acts, and denouncing the personal liberty laws of the States, being passed by a vote of thirty-six to six,—all having been previously approved by a caucus of the Democratic senators.5