Texas Senate Bill 4 For more than 150 years, immigration enforcement in the United States operated under a straightforward legal principle: it belongs to the federal government. States assist. States cooperate. That legal architecture changed Friday when the Fifth Circuit Court of Appeals, ruling 10 to 7, lifted the preliminary injunction that had kept Texas Senate Bill 4 from taking effect, finding that the plaintiffs who challenged the law lacked standing to sue. Judges exp