Texas Senate Bill 4 (SB 4) has become one of the most debated immigration laws in the United States. Since the state legislature passed this sweeping senate bill in 2023, it has faced relentless legal challenges from civil rights groups, the American Civil Liberties Union, and the Texas Civil Rights Project, resulting in a cycle of federal injunctions, appeals court reversals, and last-minute district court rulings. After years of legal battles and partial enforcement, the law remains in a state of legal limbo with four key provisions still blocked by a preliminary injunction as of May 2026.
At its core, SB 4 attempts to hand state police and local police the power to arrest, detain, and deport immigrants, powers that have long been a federal responsibility governed exclusively by federal immigration law.
What makes this Texas deportation scheme especially alarming is its reach beyond undocumented immigrants. Lawfully present immigrants, lawful permanent residents, individuals with a lawful U visa, and those with a pending immigration case are all at risk, particularly given the widespread racial profiling that civil rights groups warn will follow enforcement. Here is everything you need to know about what Texas Senate Bill 4 says, what is currently in effect, and what it means for your immigration status.
What Is Texas SB 4?
Texas Senate Bill 4 (2023) is a state law signed by Governor Greg Abbott on December 18, 2023. It was designed to give Texas state and local authorities powers that have historically been a federal responsibility, specifically the power to arrest, detain, and deport immigrants. Under federal immigration law, immigration enforcement has always been managed by the federal government through agencies like Immigration and Customs Enforcement (ICE), not by state police or local police.
SB 4 makes it a state crime for a non-citizen to enter Texas at any location other than an official port of entry. There are only 11 legal crossing points between Texas and Mexico. Under the Texas deportation scheme created by this Senate bill:
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State and local law enforcement agencies can arrest anyone suspected of illegal entry
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Texas state magistrates can issue removal orders, sending migrants back to Mexico
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Immigrants who trigger the reentry provision face prison sentences of up to 20 years
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Migrants can be subject to a magistrate’s removal orders during legal proceedings, without federal permission or Mexico’s agreement
Note: This is the 2023 version of Texas Senate Bill 4, distinct from the 2017 Texas SB 4 that addressed sanctuary cities.
Why Is It Controversial?
Critics, including the American Civil Liberties Union (ACLU) and the American Immigration Council, argue the law is unconstitutional because immigration enforcement is a federal responsibility, not a state one. The U.S. Department of Justice, El Paso County, and multiple civil rights organizations have all filed lawsuits against it.
The American Immigration Council described it as “cruel, inhumane, and clearly unconstitutional,” warning that it sets a dangerous precedent for similar bills being drafted in legislatures across the country. The Immigrant Legal Resource Center called it “one of the most controversial and extreme pieces of legislation that targets immigrants and noncitizens in the United States”.
Supporters, on the other hand, argue the law is a necessary response to federal inaction on border security and gives Texas the tools it needs to manage illegal crossings at the state level.
A Timeline of Key Events
December 18, 2023 — Governor Abbott signs SB 4 into law.
February 2024 — A federal district court initially blocks the law from taking effect.
March 19, 2024 — The U.S. Supreme Court allows SB 4 to temporarily go into effect through a procedural maneuver, while litigation continues.
March 20, 2024 — Just hours later, a three-judge panel decision from the Fifth Circuit Court of Appeals suspends enforcement again, finding the same constitutional problems raised in the district court.
April 24, 2026 — In a major shift, the full Circuit Court of Appeals vacates the preliminary injunction that had blocked S.B. 4. The court does not address whether the law is constitutional; it rules instead that the nonprofits and El Paso County who filed suit did not have legal standing.
May 3, 2026 — The American Civil Liberties Union, the Texas Civil Rights Project, and partner organizations file a new class action lawsuit challenging SB 4, with plaintiffs including individuals with pending immigration cases, those with lawful U visa status, and others with lawful immigration status, giving the case stronger standing.
May 7, 2026 — The ACLU files for provisional class certification and seeks emergency relief to stop the law from taking effect on May 15.
May 14, 2026 — One day before the enforcement date, U.S. District Judge David Alan Ezra of the Western District issues a new preliminary injunction, halting four key provisions of the law. In a joint statement, civil rights groups called the district court ruling a victory. Judge Ezra held that the law “conflicts with key provisions of federal immigration law, to the detriment of the United States’ foreign relations and treaty obligations” and that the state legislature cannot override the federal government’s authority in this area.
May 15, 2026 — The illegal entry provision partially activates, but the court’s decision reaffirms that the most significant enforcement mechanisms, including judges’ removal orders and the reentry provision, remain blocked.
What Is Currently In Effect?
As of May 18, 2026, one provision of SB 4 is active: law enforcement can make arrests in connection with illegal entry into Texas. However, the broader and more sweeping enforcement powers remain blocked, including:
The ability of state judges to issue deportation orders
The criminal offense of illegal reentry carries a 20-year prison sentence
The mandatory return of migrants to Mexico during proceedings
The decision by Judge Ezra is widely expected to be appealed, meaning the legal status of SB 4 could change again in the coming weeks or months.
What Does This Mean for Immigrants?
The uncertainty surrounding SB 4 has already had a chilling effect on immigrant communities across Texas. Here is what you need to know about your rights:
Know your immigration status. Whether you are a lawful permanent resident, hold a lawful U visa, have obtained lawful immigration status through another pathway, or have a pending immigration case, your legal status matters in how this law may affect you.
You have the right to remain silent. You are not required to answer questions about your immigration status from local police or state police.
Carry your immigration documents. If you have lawful immigration status, carrying documentation can help law enforcement quickly verify your status and avoid unlawful detention.
The provisions remain blocked for now. Magistrate’s removal orders and the reentry provision cannot currently be enforced, but this could change following an appeals court ruling.
Racial profiling is a real risk. Civil rights groups have extensively documented how laws like SB 4 lead to widespread racial profiling, subjecting even lawfully present immigrants and U.S. citizens to unlawful stops.
Seek legal counsel immediately if you or someone you know has been detained or arrested under SB 4. An experienced immigration attorney can review your immigration case and help protect your rights.
What Comes Next?
The legal battle over Texas SB 4 is far from over. The state is expected to appeal Judge Ezra’s preliminary injunction to the Circuit Court of Appeals, and the case may ultimately return to the U.S. Supreme Court. The core constitutional question, whether a state law can take over what has always been a federal responsibility, has still not been definitively resolved.
For undocumented immigrants, lawful permanent residents, and anyone with a pending immigration case in Texas, the outcome of this case could affect daily life for years to come. Federal immigration law has always governed how the U.S. handles immigration violations, and courts will continue to weigh whether S.B. 4 crosses that constitutional line.
Facing Immigration Concerns in Texas? We Can Help.
At the Bufete de abogados de inmigración Abbasi, our legal team closely monitors developments like Texas SB 4 to protect our clients’ rights. Whether you are navigating a pending immigration case, concerned about your lawful immigration status, or need guidance following an encounter with law enforcement, we are here to help.
Póngase en contacto con nosotros to schedule a free consultation today.
