Texas immigration law: Here’s what to know about SB 4

Texas National Guard members install a sign, meant to detract migrants from crossing the Rio Grande, at the bank of the river in Eagle Pass, on Jan. 17, 2024. (Credit: Eddie Gaspar/The Texas Tribune)

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Texas lawmakers in 2023 approved Senate Bill 4, which allows Texas police to arrest people for illegally crossing the Mexico border. It was expected to go into effect in early March, but legal challenges from the U.S. Justice Department and immigration advocacy organizations have repeatedly prevented the law from going into effect as litigation makes its way through federal courts.