the laws to be duly executed.  And if the militia of a State where such combination may happen shall refuse or be insufficient to suppress the same, it shall be lawful for the President, if the Legislature of the United States be not in session, to call forth and employ such numbers of the militia of any other State or States most convenient thereto as may be necessary; and the use of militia so to be called forth may be continued, if necessary, until the expiration of thirty days after the commencement of the ensuing session.

In 1795 this provision was substantially reenacted in a law which repealed the act of 1792.  In 1807 the following act became the law by the approval of President Jefferson: 

That in all cases of insurrection or obstruction to the laws, either of the United States or of any individual State or Territory, where it is lawful for the President of the United States to call forth the militia for the purpose of suppressing such insurrection or of causing the laws to be duly executed, it shall be lawful for him to employ for the same purposes such part of the land or naval force of the United States as shall be judged necessary, having first observed all the prerequisites of the law in that respect.

By this act it will be seen that the scope of the law of 1795 was extended so as to authorize the National Government to use not only the militia, but the Army and Navy of the United States, in “causing the laws to be duly executed.”

The important provision of the acts of 1792, 1795, and 1807, modified in its terms from time to time to adapt it to the existing emergency, remained in force until, by an act approved by President Lincoln July 29, 1861, it was reenacted substantially in the same language in which it is now found in the Revised Statutes, viz: 

SEC. 5298.  Whenever, by reason of unlawful obstructions, combinations, or assemblages of persons, or rebellion against the authority of the Government of the United States, it shall become impracticable, in the judgment of the President, to enforce by the ordinary course of judicial proceedings the laws of the United States within any State or Territory, it shall be lawful for the President to call forth the militia of any or all the States and to employ such parts of the land and naval forces of the United States as he may deem necessary to enforce the faithful execution of the laws of the United States or to suppress such rebellion, in whatever State or Territory thereof the laws of the United States may be forcibly opposed or the execution thereof forcibly obstructed.

This ancient and fundamental law has been in force from the foundation of the Government.  It is now proposed to abrogate it on certain days and at certain places.  In my judgment no fact has been produced which tends to show that it ought to be repealed or suspended for a single hour at any place in any of the States or Territories of the Union.  All the teachings of experience in the course of our history are in favor of sustaining its efficiency unimpaired.  On every occasion when the supremacy of the Constitution has been resisted and the perpetuity of our institutions imperiled the principle of this statute, enacted by the fathers, has enabled the Government of the Union to maintain its authority and to preserve the integrity of the nation.