Evidently, Congress must soon legislate again on the hastily organized Bureau, which had so quickly grown into wide significance and vast possibilities. An institution such as that was well-nigh as difficult to end as to begin. Early in 1866 Congress took up the matter, when Senator Trumbull, of Illinois, introduced a bill to extend the Bureau and enlarge its powers. This measure received, at the hands of Congress, far more thorough discussion and attention than its predecessor. The war cloud had thinned enough to allow a clearer conception of the work of emancipation. The champions of the bill argued that the strengthening of the Freedmen's Bureau was still a military necessity; that it was needed for the proper carrying out of the Thirteenth Amendment, and was a work of sheer justice to the ex-slave, at a trifling cost to the government. The opponents of the measure declared that the war was over, and the necessity for war measures past; that the Bureau, by reason of its extraordinary powers, was clearly unconstitutional in time of peace, and was destined to irritate the South and pauperize the freedmen, at a final cost of possibly hundreds of millions. Two of these arguments were unanswered, and indeed unanswerable: the one that the extraordinary powers of the Bureau threatened the civil rights of all citizens; and the other that the government must have power to do what manifestly must be done, and that present abandonment of the freedmen meant their practical enslavement. The bill which finally passed enlarged and made permanent the Freedmen's Bureau. It was promptly vetoed by President Johnson, as "unconstitutional," "unnecessary," and "extrajudicial," and failed of passage over the veto. Meantime, however, the breach between Congress and the President began to broaden, and a modified form of the lost bill was finally passed over the President's second veto, July 16.