The ACLU of Arizona on Monday sued state and local law enforcement officials seeking to block a portion of Proposition 314 that is scheduled to take effect this week. The legal challenge targets a provision that would authorize local police to enforce new state immigration rules and give state judges the power to order deportations, the civil rights group says.
What the lawsuit argues
Victoria Lopez, executive director of the ACLU of Arizona, framed the challenge in constitutional terms, saying the measure intrudes on federal authority over immigration. The suit was filed on behalf of the Florence Immigrant and Refugee Rights Project, an organization that has represented people in the federal immigration system for decades.
“The state of Arizona is essentially creating its own immigration, detention and deportation system, which directly contradicts the U.S. Constitution,”
The complaint points to the U.S. Supreme Court’s prior ruling that struck down most of Arizona’s SB 1070, which similarly expanded local law enforcement’s role in immigration matters. ACLU officials say Proposition 314 goes further by extending enforcement and deportation authority across the entire state legal system.
Broader context and local impact
Legal experts and community advocates have closely watched Proposition 314 since it appeared on the ballot in 2024. If the challenged section is allowed to operate, it would change how local police interact with undocumented residents and could place county and municipal agencies at the center of immigration enforcement — a role traditionally handled by federal authorities.
- Who sued: ACLU of Arizona on behalf of the Florence Immigrant and Refugee Rights Project
- What it targets: Prop. 314 section deputizing local law enforcement and authorizing state judicial deportation orders
- Why it matters: Alleged conflict with federal immigration authority and precedent from SB 1070 decisions
The lawsuit arrives amid other immigration-related developments in the state. The reporting notes that two additional ICE facilities in Arizona were keeping some detainees quarantined for possible measles exposure after another facility reported multiple cases. Separately, Mexico has said it will request criminal charges in the deaths of 17 Mexican nationals who died in U.S. immigration custody or during enforcement actions, and President Claudia Sheinbaum has signaled her government will pursue investigations beyond diplomatic notes.
Next steps
Court action will determine whether the contested portion of the ballot measure can take effect as scheduled. If a judge grants the ACLU's request, enforcement powers granted by that section would be paused while the litigation proceeds. If not, the state could begin implementing the provision immediately, setting the stage for federal court review and likely appeals.
| Party | Role |
|---|---|
| ACLU of Arizona | Plaintiff, filed suit |
| Florence Immigrant and Refugee Rights Project | Represented in lawsuit |
| Arizona law enforcement officials | Defendants (top officials) |
For Arizonans, the dispute raises practical questions: whether local police will be asked to change patrol and arrest practices, how courts might coordinate with federal immigration agencies, and how immigrant communities will navigate interactions with state and local authorities. The lawsuit is likely to be a focal point for civil rights groups, county governments and law enforcement leaders in the weeks ahead.
Reporting will continue as the court documents and subsequent hearings become public and officials on both sides respond.
