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What Were the Alien and Sedition Acts?

The Alien and Sedition Acts curbed the rights of immigrants in the United States.

A series of four laws passed by the 5th United States Congress in 1798 during John Adam’s presidency, the Alien and Sedition Acts were highly controversial laws that infringed upon civil liberties. 

These xenophobic laws restricted foreign residents’ affairs in the United States. They also curbed constitutional rights by limiting freedom of the press and speech. 

Criticism of the government or the president of the United States became illegal after the law’s passing. 

Background: Polarized Political Parties

The United States’ first political party, the Federalist party, dominated early American politics, controlling the national government in the 1790s. 

Portrait of John Adams
John Adams was the 1st vice president of the United States.

Adams and the Federalist Party won the first partisan election in American history, defeating future President Thomas Jefferson and the Democratic-Republican Party. 

Federalists favored a more centralized government and stronger federal law, while Democratic-Republicans favored giving individual states more power. 

The parties disagreed and diverged when to adhering to the constitution. Federalists believed in ratification and a rather vague interpretation of the constitution, while Democratic-Republicans believed in rigid, strict adherence. 

XYZ Affair

At the time, the Federalist Party was predominantly pro-Great Britain, while the Democratic-Republicans were predominantly pro-French. This division came to a head with the infamous XYZ affair of 1797. 

British & French flags
There was a pro-Great Britain and pro-France divide in American politics.

Shortly after coming to office, President Adams sent three delegates to the French capital city, Paris, to meet with Charles Talleyrand, the French Foreign Minister.

Instead of a meeting with Talleyrand, three French representatives, labeled in United States’ documents simply as X, Y, and Z, attempted to extort the United States for a $250,000 bribe and an immediate loan of $10 Million before the intended talks could begin. 

Eventually, news of the incident reached the American public causing outrage and hawkish calls for war with France. 

Hysteria at home

Following the XYZ incident and hostilities from French privateers directed against merchant ships sailing within American waters (many American ships were captured, some sunk), hysteria and war fever reached a breaking point.

Thomas Jefferson portrait
Thomas Jefferson was smeared for his pro-France stance.

Federalists took advantage of the public’s anger to build the military, which had been significantly reduced following the American Revolution. They smeared Thomas Jefferson and the Democratic-Republicans for their pro-France stance. 

Staunch Federalist and Founding Father Alexander Hamilton described Democratic-Republicans’ members as more French than American. 

Preparations for War

Amidst the growing hysteria, President Adams and his administration began preparing the United States for a potential French invasion. 

As part of the preparations for a possible war, weary of potential French saboteurs and spies already on American soil, Congress, made up of a Federalist majority, passed the four Alien and Sedition Acts into law in the summer of 1798. 

Alien Acts

The three Alien Acts dealt primarily with French and Irish immigrants who tended to be pro-French. AEA, or the American Enemies Act, permitted the detention and subsequent deportation of any resident alien of a foreign enemy in the event of war. 

The three Alien Acts primarily targeted French and Irish immigrants.

The AFA, or American Friends Act, gave the president the power to try and deport any non-citizen reported or suspected of plotting against the government, even during times of peace. 

The Naturalization Act raised the waiting period for United States citizenship to a period of five to 14 years.

Sedition Act

The Sedition Act banned publishing any “false, scandalous, or malicious writing” directed against the president or Congress. 

Hammer and gavel
Federalists argued that seditious libel fell under the auspice of common law.

Additionally, it became illegal to conspire against the government, specifically any measure or law enacted by the government. 

Though some of the practices outlawed in the Sedition Act were already forbidden in some states by libel and common law, this was the first time the Federal Government passed such measures. 

Sedition Act debate

In response, Democratic-Republicans, led by Jefferson, a minority in Congress, vehemently opposed the new laws, especially the Sedition Act. 

They argued that the law violated the constitution, specifically the First Amendment and the articles protecting freedom of the press and speech. 

Nonetheless, with a majority, the Federalists pushed the law, arguing that English and American courts had long been punishing seditious libel under the auspice of common law. 

Kentucky and Virginia protest

Responding to the controversial alien and sedition acts, Kentucky and Virginia passed measures (known simply as the Kentucky and Virginia Resolutions) through their respective state legislatures.

James Madison
James Madison was one of the authors of the Kentucky and Virginia Resolutions.

These resolutions declared that both the Alien and the Sedition Acts were void due to their unconstitutionality and infringement upon civil liberties

Unknown at the time, only to be revealed some 25 years later, Thomas Jefferson and James Madison were the authors of this piece of legislation. 

In Action: The Alien and Sedition Act in Use

Trial of Matthew Lyon

Matthew Lyon, a Republican congressman from the State of Vermont, became the first individual to be prosecuted under the new law in 1798. 

Lyon was subject to a grand jury indictment for publishing letters in Democratic Republican Party newspapers that they claimed showed “intent and design” to defame President Adams and the United States government. 

Defending himself in court, Lyon was eventually convicted, receiving a four-month prison sentence and a $1,000 fine. 

Further prosecutions

In total, from 1798-1801, 26 individuals were prosecuted by the federal government for violating the Sedition Act. 

All those on trial opposed President John Adams, and many worked as editors for Democratic Republican Party newspapers. 

Freedom of the press
Freedom of the press once again came under scrutiny following the prosecutions.

These prosecutions fueled a tremendous debate across the nation about the nature of the constitution, the right to freedom of the press and freedom of speech, and the treatment of opposing political parties

The Election of 1800

The hotly contested election of 1800 pitted incumbent President John Adams against Democratic Republican Party candidate Thomas Jefferson. 

The new laws restricting freedoms played a prominent role in the election. Ultimately, Jefferson won the election partly due to outrage related to the Alien and Sedition Acts. 

In hindsight, the implementation of these laws is viewed as a tremendous blunder by the Adams administration, which greatly hindered his re-election chances. 


With Jefferson and the Democratic-Republican party in charge, all Alien and Sedition laws, except the Alien Enemies Act (AEA), were either repealed or not renewed by 1802. 

AEA was amended in 1918, during World War I, to add women to the list of those eligible for prosecution. United States President Franklin Delano Roosevelt invoked the AEA following the Japanese attack on the United States Naval base at Pearl Harbor

The law’s implementation created internment camps in the western half of the United States, where thousands of Japanese-American families were forcibly relocated. 

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