Trump Invokes 1798 Law for Immigration Crackdown: What Does It Mean for US Policy?

In what some might call an unprecedented move, President Donald Trump recently invoked the Alien Enemies Act of 1798, a rarely used wartime authority, to expedite the deportation of Venezuelan nationals under the premise that the Tren de Aragua criminal gang, allegedly acting at the behest of the Venezuelan government, was posing an “invasion” threat to the United States.

This move has sparked intense legal and political debates, raising questions about its impact on US immigration policy, national security, and the balance of executive power.

What is the Alien Enemies Act of 1798?

The Alien Enemies Act, a piece of legislation passed during the Adams administration, was originally designed to allow the US government to detain and deport citizens of nations at war with the United States in times of conflict.

The law grants the president broad authority to take action against foreign nationals from countries deemed hostile, particularly in times of war or invasion.

Historically, the Alien Enemies Act has been invoked sparingly: during the War of 1812, World War I, and World War II. Its use has typically been confined to wartime scenarios, and its invocation has almost always been tied to direct military conflict.

The law allows the government to arrest, detain, and deport undocumented migrants over the age of 14 from countries deemed to be involved in an “invasion or predatory incursion” against the US. During these periods, individuals affected by the law are not entitled to an asylum interview or immigration court hearing. Instead, they are detained and deported with minimal due process.

The law’s application has long been viewed as a drastic and controversial measure, underscoring the tension between national security concerns and civil liberties.

Trump’s Use of the Alien Enemies Act

Last Friday, President Trump invoked the Alien Enemies Act to justify the rapid deportation of Venezuelan nationals, particularly those connected to the Tren de Aragua gang, which he claimed was acting as a proxy for the Venezuelan government.

The gang, which originated in Venezuelan prisons, is alleged to have expanded its operations across Latin America, including into the United States. Trump framed the gang’s activities as part of a broader “invasion” by Venezuela, arguing that the organization posed a substantial threat to US national security.

This declaration came on the heels of Trump’s campaign rhetoric and earlier actions aimed at cracking down on illegal immigration and foreign criminal networks.

The invocation of the Alien Enemies Act in this context was seen as part of Trump’s broader strategy to expedite the deportation of undocumented immigrants—especially those involved in criminal activities—under the guise of national security.

The decision was framed as a necessary action to protect US citizens from dangerous foreign criminal organizations, even though the law had never before been used in such a context.

Legal Challenges and Controversy

The invocation of the Alien Enemies Act has sparked significant legal challenges.

In response to a lawsuit filed by immigrant-rights groups, including the ACLU and Democracy Forward, US District Judge James Boasberg issued a temporary restraining order, halting the deportations of five Venezuelans named in the suit.

The judge expressed serious concerns over the legality of Trump’s use of the law, particularly given that the Alien Enemies Act was historically reserved for times of war and conflict.

Boasberg’s ruling temporarily blocked the deportations and has raised the prospect of a broader legal challenge that could impact future executive actions related to immigration policy.

The Litigation Tracker has been updated with Saturday’s historic case involving Alien Enemies Act and Chief Judge James Boasberg’s Temporary Restraining Order.https://t.co/6UpgJLj6W4

Case Summary here⬇️ pic.twitter.com/nWW8TJc26G

— Just Security (@just_security) March 15, 2025

The lawsuit, which was filed before Trump’s proclamation was even made public, argued that the law could potentially subject “countless Venezuelans” to deportation without any meaningful judicial review or hearing. By invoking the Alien Enemies Act, critics argue that Trump is circumventing due process protections, leading to the rapid and potentially arbitrary removal of individuals from the US without proper oversight.

In the wake of the legal challenge, the Justice Department appealed the ruling, arguing that the president’s authority over national security matters supersedes the court’s jurisdiction, especially when it comes to actions designed to address perceived threats from foreign entities.

The Trump administration maintains that it has the authority to define the national security interests of the US and take necessary actions, including deportation, to protect the country from foreign threats.

Impact on Immigration Policy

Trump’s invocation of the Alien Enemies Act has profound implications for US immigration policy.

Historically, US immigration law has been rooted in principles of due process, asylum rights, and protection for individuals fleeing violence and persecution.

The use of the Alien Enemies Act shifts the focus toward a national security-centric approach, where the government can take swift action to remove individuals without the traditional legal safeguards.

This move could set a precedent for future presidents to expand their executive powers in the realm of immigration enforcement. It raises questions about how far the executive branch can go in using wartime powers for immigration purposes, especially when it involves individuals who may not have committed any crimes but are associated with groups or countries deemed hostile by the US government.

The broader impact could be a shift away from the more balanced and due-process-oriented system toward one that prioritizes rapid deportations, bypassing the protections that immigrants have traditionally had under US law.

Additionally, the Trump administration’s use of the Alien Enemies Act to target immigrant criminal organizations, including gangs like Tren de Aragua, signals a shift in how immigration policy is framed.

Rather than focusing on broader immigration reforms, the administration has emphasized the removal of individuals linked to criminal activities, particularly those from countries with strained diplomatic relations with the US.

This shift could lead to more targeted immigration policies, potentially affecting large segments of immigrant populations, particularly those from regions experiencing conflict or economic instability.

National Security Implications

The invocation of the Alien Enemies Act also raises important national security questions. While the US government has the responsibility to protect its citizens from foreign threats, the use of such broad wartime powers can also be seen as a dangerous overreach.

Critics argue that labeling a criminal gang as an existential threat to national security and using it as a justification for mass deportations could undermine the principles of justice and fairness that are foundational to the US legal system.

Moreover, the precedent set by using the Alien Enemies Act could be dangerous in the future, especially if the definition of “foreign threats” becomes broader and more politically motivated.

While national security is a legitimate concern, the potential for abuse of executive powers could lead to a more authoritarian approach to immigration enforcement, stripping away the protections that immigrants and non-citizens have long relied on in the US.

Conclusion

Trump’s invocation of the Alien Enemies Act of 1798 represents a significant shift in US immigration policy, one that prioritizes national security concerns over traditional due process and legal protections for immigrants. While the president’s actions are framed as necessary for protecting the US from foreign threats, they also open the door for more expansive uses of wartime powers in domestic immigration policy.