If it should be said, that the adoption of this conclusion would affect the character of many laws enacted by States, and thus far recognized as ancillary to the National Militia, it may be replied, that the possibility of these consequences cannot justly influence our conclusions on a question which must be determined by acknowledged principles of Constitutional Law. In obedience to these same principles, the Supreme Court, in the case of _Prigg_ v. _Pennsylvania_, after asserting a power over fugitive slaves which is controverted, has proceeded to annul a large number of statutes in different States. Mr. Justice Wayne in this case said, "that the legislation by Congress upon the provision, as the supreme law of the land, _excludes all State legislation upon the same subject_,--and that no State can pass any law or regulation, or interpose such as may have been a law or regulation when the Constitution of the United States was ratified, _to superadd to_, control, qualify, or impede a remedy enacted by Congress for the delivery of fugitive slaves to the parties to whom their service or labor is due."[8] Without the sanction of any express words in the Constitution, and chiefly, if not solely, impressed by the importance of consulting "unity of purpose or uniformity of operation"[9] in the legislation with regard to fugitive slaves, the Court assumed a power over this subject, and then, as a natural incident to this assumption, excluded the States from all sovereignty in the premises. [8] Prigg _v._ Pennsylvania, 16 Peters, 636. [9] Ibid., 624. If this rule be applicable to the pretended power over fugitive slaves, it is still more applicable to the power over the militia which nobody questions. Besides, I know of no power which so absolutely requires what has been regarded as an important criterion, "unity of purpose or uniformity of operation." No uniform military organization can spring from opposite or inharmonious systems, and all systems proceeding from different sources are liable to be opposite or inharmonious.