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Quasi-War

Undeclared naval war between the United States and France, 1798–1800

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Scene depicting the action of 9 February 1799, when the USS Constellation (left), commanded by Captain Thomas Truxtun , captured the French frigate L'Insurgente (right).
Rear Admiral John William Schmidt (Ret.) (1906–1981) · Public domain

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Through Indian Ocean, American Revolutionary War and Supreme Court of the United States

In 1793, Congress suspended repayment of loans made by France during the American Revolutionary War. This was followed in 1794 by the Jay Treaty with Great Britain, then engaged in the War of the First Coalition with France. The French government responded by permitting privateer attacks on American ships trading with Britain, which in October 1796 was expanded to cover all ships operating in American waters, regardless of nationality.

The United States was initially unable to mount an effective response, with over 316 American ships captured in the first year. Congress reconstituted the United States Navy, and in July 1798 approved the use of force against France. By 1799, losses had been significantly reduced through informal cooperation with the Royal Navy, whereby merchant ships from both nations were allowed to join each other's convoys. The replacement of the First Republic by the Consulate in November 1799 led to the Convention of 1800, which ended the war.

The right of Congress to authorize military action without a formal declaration of war was later confirmed by the Supreme Court. This ruling has formed the basis of many similar actions since, including the Vietnam War and the Gulf War in the 20th century.

Background

Under the 1778 Treaty of Alliance, the United States had agreed to protect the French West Indies in return for French support in the American Revolutionary War. Because the treaty had no termination date, France claimed this obligation included supporting them against Great Britain and the Dutch Republic during the 1792–1797 War of the First Coalition. Despite popular enthusiasm for the French Revolution, there was little support for this in Congress. Neutrality allowed New England shipowners to earn huge profits evading the British blockade of French ports, while the Southern planter class feared the example set by France's abolition of slavery in 1794.

In 1793, Congress suspended repayment of French loans incurred during the Revolutionary War, on the grounds that the execution of Louis XVI and dissolution of the former regime rendered existing agreements void. They further argued American military obligations were only valid in a defensive conflict, and thus did not apply, since France had declared war on Britain and the Dutch Republic. To ensure the U.S. did not become involved, Congress passed the Neutrality Act of 1794, while President George Washington issued an executive order forbidding American merchant ships from arming themselves.

The two countries agreed to set aside their differences and co-operate on the basis of "benevolent neutrality". However, France interpreted this as allowing their privateers to enter American ports, and sell captured British ships in American prize courts, but not vice versa, while the United States viewed it as the right to provide the same privileges to both. Tensions were exacerbated by the 1794 Jay Treaty between the United States and Britain, which led to a rapid expansion of trade, American exports to Britain rising from US$33 million in 1794 to $94 million by 1801.

In late 1796, French privateers began seizing American ships trading with the British, helped by the almost complete lack of a United States Navy. Their last warship had been sold in 1785, leaving only a small flotilla belonging to the United States Revenue Cutter Service and a few neglected coastal forts. From October 1796 to June 1797, French vessels captured 316 ships, 6% of the entire American merchant fleet, causing losses of $12 to $15 million. On 2 March 1797, the French Directory issued a decree permitting the seizure of any neutral shipping without a rôle d'équipage listing the nationalities of each crewman. Since American ships rarely carried such documents, France had effectively initiated a commerce war.

Diplomatic efforts to resolve the conflict ended in the 1797 dispute known as the XYZ Affair. However, the hostilities created support for establishing a limited naval force, and on 18 June, President John Adams appointed Benjamin Stoddert the first Secretary of the Navy. On 7 July 1798, Congress approved the use of force against French warships in American waters, but wanted to ensure conflict did not escalate beyond these limits. As a result, it was called a "limited" or "Quasi-War", and led to political debate over whether it was constitutional. A series of rulings by the Supreme Court of the United States confirmed the ability of the U.S. to conduct undeclared wars, or "police actions".

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