It is sometimes asserted that the National Constitution expressly reserves to the States the power of determining who shall vote, because it declares that “the electors in each State shall have the _qualifications_ requisite for electors of the most numerous branch of the State Legislature.” But this assumption proceeds on the fatal error, that, at any time under the Constitution, which makes no distinction of color, there can be any such oligarchical distinction as a “qualification” founded on color. Even assuming that in a period of peace this might be done, yet, beyond all doubt, at the present moment, from the necessity of the case, from the Rights of War, from the Constitutional clause of guaranty, and from the Constitutional Amendment, Congress, by its quadruple powers, is completely authorized to do all it thinks best for the national security and the national faith in the Rebel States. As well question Farragut in the maintop of his steamer, Sherman in his march across Georgia, or Grant in the field before Richmond, as question the authority of Congress in the present crisis. But, if the authority exists, it must be exercised. II. And this brings me to the next form of this necessity and duty, as they appear in the guaranty clause of the Constitution. It is expressly declared that “the United States shall guaranty to every State in this Union a republican form of government.” These words, when properly understood, leave no alternative. They speak to us with no uncertain voice. But they must be understood. The Rebel States, while providing constitutional safeguards for property in man, and, according to the vaunt of their Vice-President, making Slavery the corner-stone of the new Government, yet follow our Constitution in the formal guaranty of a republican form of government.[46] Defiantly they assume that Slavery is not inconsistent with such a government. To this degrading assumption we must reply, not only for the national cause, but that republican governments may not suffer.