Because the Union was formed by compact, it is said the parties to that compact may, when they feel themselves aggrieved, depart from it; but it is precisely because it is a compact that they cannot. A compact is an agreement or binding obligation. It may by its terms have a sanction or penalty for its breach, or it may not. If it contains no sanction, it may be broken with no other consequence than moral guilt; if it have a sanction, then the breach incurs the designated or implied penalty. A league between independent nations, generally, has no sanction other than a moral one; or if it should contain a penalty, as there is no common superior, it cannot be enforced. A government, on the contrary, always has a sanction, express or implied; and, in our case, it is both necessarily implied and expressly given. An attempt by force of arms to destroy a government is an offense, by whatever means the constitutional compact may have been formed; and such government has the right, by the law of self-defense, to pass acts for punishing the offender, unless that right is modified, restrained, or resumed by the constitutional act. In our system, although it is modified in the case of treason, yet authority is expressly given to pass all laws necessary to carry its powers into effect, and under this grant provision has been made for punishing acts which obstruct the due administration of the laws.
