Now I am not ready to say, I do not say, that the Senate has not the power to institute a proceeding like that now in question. I am very clear that it has not the power by compulsory process to compel witnesses to testify in aid of legislation, as was once attempted in what was known familiarly as the Harper’s Ferry Investigating Case. But I do not undertake to say that it may not institute a proceeding like that in which we are now engaged; yet I admit its legality with great hesitation and with sincere doubt. I doubt whether such an assumption can stand an argument in this Chamber; I doubt whether it can stand a discussion before a court of justice. How do you arrive at such a power? The Senator from Wisconsin [Mr. CARPENTER] said, the other day, the Senate, according to the arguments of certain Senators, has not the power of a justice of the peace. The Senator never spoke truer words: the Senate has not the power of a justice of the peace. A justice of the peace is a court with the powers of a court. The Senate of the United States is not a court, except in the cases to which I have already referred. It is a serious question whether it is a court in the proceeding which it has now seen fit to institute. Were it a court, then the argument of the Senator from Wisconsin might be applicable, and it might then claim the privileges of a court. It might proceed, if you please, to fine as well as to commit. The Senate in its discretion forbears to fine; it contents itself with imprisonment. But if it can imprison, why not fine? Why is not the whole catalogue of punishment open to its grasp?
I have reminded you, Sir, that our powers, whatever they may be, are under a written Constitution, and in this important respect clearly distinguishable from the powers of the House of Commons, which are the growth of tradition and immemorial usage. I am not the first person to take this ground. I find it judicially asserted in most authentic judgments, to which I beg to call the attention of the Senate.
I have in my hands the fourth volume of Moore’s Privy Council Cases, cases argued in the Privy Council of England, many of them being cases that have come up from the Colonies,--and here is one, being an appeal from the Supreme Court of the island of Newfoundland. I will read the marginal note:--