Page:Democracy in America (Reeve, v. 1).djvu/262

 within the limits of the Federal courts. The rule which it lays down is simple, but pregnant with an entire system of ideas, and with a vast multitude of facts. It declares that the judicial power of the Supreme Court shall extend to all cases in law and equity arising under the laws of the United States.

Two examples will put the intention of the legislator in the clearest light:

The Constitution prohibits the States from making laws on the value and circulation of money: If, notwithstanding this prohibition, a State passes a law of this kind, with which the interested parties refuse to comply because it is contrary to the Constitution, the case must come before a Federal court, because it arises under the laws of the United States. Again, if difficulties arise in the levying of import duties which have been voted by Congress, the Federal Court must decide the case, because it arises under the interpretation of a law of the United States.

This rule is in perfect accordance with the fundamental principles of the Federal Constitution. The Union, as it was established in 1789, possesses, it is true, a limited supremacy; but it was intended that within its limits it should form one and the same people. Within those limits the Union is