These graphics are part of “Trump Two: Six Months In,” our series taking stock of the administration’s efforts to reshape immigration enforcement and criminal justice.

In the first half of this year, 37 states enacted over 100 immigration-related laws, according to an analysis of data from the National Conference of State Legislatures (NCSL). Republican-led states have passed three-quarters of those laws.

The Marshall Project has reported on how states are enacting dozens of new statutes to fuel the Trump administration’s crackdown on illegal immigration. Lawmakers have established restrictions and penalties around many aspects of noncitizens’ lives. Meanwhile, some Democratic-led states are passing bills that reinforce support for immigrants.

Here are the new pro- and anti-immigration laws that states enacted from January to June 2025. Scroll down for more context.

NCSL’s database includes bills and amendments passed into law with a governor’s signature, as well as resolutions approved by a state legislature, dating back to 2008.

The Marshall Project found at least 34 new statutes in 2025 that relate to the role of police and sheriff’s departments in immigration enforcement — more than double the number of similar laws enacted in all of 2024. These statutes encourage state and local police to cooperate with federal authorities, criminalize aid to undocumented immigrants, create state immigration enforcement bureaus and more.

As part of the administration’s immigration enforcement, President Donald Trump expanded the 287(g) program, which lets local police departments apply to partner with federal immigration authorities by joining task forces, administering warrants or transferring detainees from local jails to federal custody.

The Marshall Project found that eight states have enacted laws encouraging or requiring participation in the 287(g) program, and more than 600 law enforcement agencies across the U.S. signed new partnership agreements from January to July.