_First._ The inquiry which it institutes is clearly judicial in character,--without, however, any judicial purpose, or looking to any judicial end. The committee is essentially a Tribunal, with power of denunciation, but without power of punishment,--sitting with closed doors, having the secrecy of the Inquisition or the Star Chamber, or, if you please, the Grand Jury,--with power to investigate facts involving the guilt of absent persons, and to denounce fellow-citizens as felons and traitors. If such a power is lodged anywhere outside of judicial tribunals, it must be in the House of Representatives, as the Grand Inquest of the Nation, with its power to impeach all civil officers, from the President down; but it cannot be in the Senate. Let me cite an illustration. The Constitution of Maryland provides expressly that “the House of Delegates may inquire, on the oath of witnesses, into all complaints, grievances, and offences, as the Grand Inquest of the State, and may commit any person for any crime to the public jail, there to remain until discharged by due course of law.” But I deny that the Senate of that neighbor State can erect itself into a Grand Inquest. If the Senate of the United States have power to make the present inquiry, then, on any occasion of alleged crime, of whatever nature, whether of treason or murder or riot, it may rush to the assistance of the grand juries of the District, or, still further, it may rush to the assistance of the grand juries of Virginia; in short, it will be an inquest of commanding character, and with far-reaching, all-pervading process, supplementary and ancillary to the local inquest,--or, rather, so transcendent in powers, that by its side the local inquest will be dwarfed into insignificance. This cannot be proper or constitutional. But perhaps I am especially sensitive on this point; for, as a citizen of Massachusetts, I cannot forget that her Bill of Rights, originally the work of John Adams, provides expressly that the legislative department shall never exercise judicial powers, and the judicial department shall never exercise legislative powers,--“to the end,” as is solemnly declared, “it may be a government of laws, and not of men.” But, assuming that the resolution is defective so far as it constitutes an inquest into crime, it may be said that the witness should be compelled to answer the other parts. Surely, the Senate will not resort to any such refinement in order to imprison a citizen.