If any person shall, within the territory or jurisdiction of the United States, begin, or set on foot, or provide or prepare the means for, any military expedition or enterprise to be carried on from thence against the territory or dominions of any foreign prince or state, or of any colony, district, or people, with whom the United States are at peace, every person so offending shall be deemed guilty of a high misdemeanor, and shall be fined not exceeding $3,000 and imprisoned not more than three years.
And this law has been executed and enforced to the full extent of the power of the Government from that day to this.
In proclaiming and adhering to the doctrine of neutrality and nonintervention, the United States have not followed the lead of other civilized nations; they have taken the lead themselves and have been followed by others. This was admitted by one of the most eminent of modern British statesmen, who said in Parliament, while a minister of the Crown, “that if he wished for a guide in a system of neutrality he should take that laid down by America in the days of Washington and the secretaryship of Jefferson;” and we see, in fact, that the act of Congress of 1818 was followed the succeeding year by an act of the Parliament of England substantially the same in its general provisions. Up to that time there had been no similar law in England, except certain highly penal statutes passed in the reign of George II, prohibiting English subjects from enlisting in foreign service, the avowed object of which statutes was that foreign armies, raised for the purpose of restoring the house of Stuart to the throne, should not be strengthened by recruits from England herself.
All must see that difficulties may arise in carrying the laws referred to into execution in a country now having 3,000 or 4,000 miles of seacoast, with an infinite number of ports and harbors and small inlets, from some of which unlawful expeditious may suddenly set forth, without the knowledge of Government, against the possessions of foreign states.