Federal Judge Blocks Texas Law Criminalizing Unlawful Reentry, Citing Supremacy Clause

A common misconception about the legal battle over Texas's border enforcement law is that it hinges entirely on whether the state has the right to defend itself from an "invasion." In reality, the federal judiciary's latest intervention rests on a much older and more structural foundation: the Supremacy Clause. By attempting to criminalize unlawful reentry and empower local magistrates to order deportations, Texas did not just enhance border security—it attempted to build a parallel immigration system, a power the Constitution reserves exclusively for the federal government.[3]

U.S. District Judge David Alan Ezra of the Western District of Texas issued a preliminary injunction in the class-action lawsuit LML v. Martin, blocking four key provisions of Texas Senate Bill 4 just before they were set to take effect. The blocked measures include the state crime of unlawful reentry, the authority of state magistrates to issue deportation orders, and the criminalization of refusing to comply with those orders.[2][5]

In a 78-page order, Ezra concluded that the state law conflicts directly with the federal Immigration and Nationality Act. He noted that allowing Texas to enforce its own deportation framework would force the federal government to navigate a "patchwork of inconsistent regulations" and undermine the nation's ability to speak with one voice on foreign relations and treaty obligations.[4]

The lawsuit was brought by the American Civil Liberties Union and the Texas Civil Rights Project on behalf of two Honduran nationals living in Austin. The plaintiffs successfully argued that the state law places lawfully present immigrants—including green card holders and U-visa beneficiaries who previously entered unlawfully but have since gained legal status—at imminent risk of arrest, prosecution, and removal by state authorities who lack training in complex federal immigration law.[2]

Texas officials, led by Governor Greg Abbott and Attorney General Ken Paxton, designed the legislation as a direct challenge to established Supreme Court precedent, specifically the 2012 Arizona v. United States decision that struck down similar state-level enforcement efforts. Texas argues that the federal government's failure to secure the southern border constitutes an "invasion," granting the state constitutional authority to take unilateral action to protect its citizens.[5]

Judge Ezra explicitly rejected the invasion defense during the proceedings and in his written ruling. He stated that unauthorized immigration, while a serious policy challenge, does not meet the constitutional definition of an armed invasion that would trigger a state's right to wage war or bypass federal supremacy, noting that "the state of Texas is not its own country."[1]

The injunction is notably partial. Because the plaintiffs in the LML v. Martin complaint did not challenge the specific provision of the law that criminalizes first-time illegal entry into Texas from a foreign nation, that misdemeanor charge remains operative. This leaves state police and Department of Public Safety troopers with the statutory authority to arrest individuals suspected of having just crossed the border unlawfully.[2]

The state immediately appealed Ezra's ruling to the conservative Fifth Circuit Court of Appeals, which has previously shown a willingness to let portions of the law take effect during ongoing litigation. The rapid legal maneuvering sets the stage for a likely showdown at the U.S. Supreme Court over the fundamental limits of state sovereignty and federalism.[5]

For now, the injunction prevents Texas from operating its own deportation pipeline. State judges cannot order migrants back to Mexico, and local law enforcement cannot prosecute individuals for the felony of unlawful reentry, preserving the federal government's monopoly on deciding who is removed from the country while the broader constitutional questions work their way through the appellate courts.[3]