Cell-Site Simulator Warrant Act of 2025
- Bill Number
- H.R. 4811
- Origin Chamber
- House
- Congress
- 119th Congress, Session 1
- Policy Area
- Crime and Law Enforcement
- Status
- Introduced
- Latest Action
- 2025-07-29: Referred to the Committee on the Judiciary, and in addition to the Committees on Intelligence (Permanent Select), Armed Services, and Energy and Commerce, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
- Last Updated
- 2026-05-27T20:57:18Z
AI-Generated Summary
Purpose
The Cell-Site Simulator Warrant Act of 2025 aims to regulate the use of cell-site simulators—devices that mimic cell phone towers to locate, identify, or intercept signals from mobile devices. It establishes strict limits to protect privacy, prevent unauthorized surveillance, and ensure such tools are used only when necessary and with judicial oversight, while allowing limited exceptions for critical situations.
Key Provisions
- General Prohibition: It is illegal for anyone to knowingly use a cell-site simulator in the U.S., or for intelligence agencies to use one abroad against U.S. persons (citizens or residents). Violations carry fines up to $250,000. Evidence from illegal uses cannot be used in court, except in cases prosecuting the violation itself.
- Warrant Requirements: Law enforcement can use simulators only under a court-issued warrant (or state/military equivalent) if:
- Other investigation methods have failed or are impractical.
- The scope (area and time) is as narrow as possible, limited to 30 days initially, with extensions requiring re-justification.
- Applications disclose potential disruptions to services like 9-1-1 calls, suicide hotlines, or poison control, include third-party certifications of the device's safety, and detail minimization steps (e.g., limiting range or duration).
- Courts must balance law enforcement needs against public safety risks and deny warrants that endanger communities or occur at protected events (e.g., protests).
- Warrants require prompt execution and automatic termination upon goal achievement or after 30 days.
- Emergency Exceptions: Allowed in urgent cases like imminent threats to life, organized crime, or national security, but use must stop if a follow-up warrant is denied, and agencies must apply for approval within 48 hours (with data destruction if denied). Exceptions also cover locating missing persons, kidnapping victims, or disaster survivors without immediate warrant needs.
- Other Exceptions:
- Intelligence Operations: Permitted under the Foreign Intelligence Surveillance Act (FISA) with similar safeguards, including limits on targeting U.S. persons abroad.
- Research and Testing: Non-government researchers or FCC-approved labs can use them for legitimate studies or equipment tests, without targeting individuals.
- Protective Services: U.S. Secret Service can use them for VIP protection, but data cannot be used as evidence in court.
- Prisons: Contraband interdiction systems (to block illegal cell phones) are allowed if facilities post notices, limit signals to the premises, comply with FCC rules, and report issues.
- Law Enforcement Training: Limited testing or training without targeting specific people, with data destroyed immediately after use.
- FCC Testing: For regulatory compliance checks.
- Minimization and Disclosure Rules:
- Attorney General must create procedures to limit collection/retention of non-target data and prohibit its sharing; these must be public.
- Agencies must destroy incidental data quickly.
- Defendants get access to any simulator-derived evidence used against them.
- Post-use notices (within 90 days) inform affected individuals about surveillance, with possible delays for good cause.
- Collection limited to device identification and signal strength/direction; content interception requires separate wiretap approval, and tracking follows existing rules.
- Enforcement and Oversight:
- Civil lawsuits allowed for victims of illegal use, with damages up to $500 per violation plus attorney fees.
- Agencies face internal discipline for willful violations.
- Annual reports from Inspectors General on usage, compliance, and incidents (unclassified versions public).
- FCC must update regulations within 180 days, without expanding its authority.
- Scope Limits: Simulators cannot broadly intercept communications without additional legal steps, and use must comply with telecom laws.
- Effective Date: Takes effect 2 years after enactment, with a possible 3-year extension for pre-existing models needing extra testing.
Significant Changes to Existing Law
- New Federal Prohibition: Previously, cell-site simulators (often called "Stingrays") were used under general search warrant rules or without specific oversight; this adds a blanket ban except under narrow exceptions, excluding them from definitions in wiretap and pen register laws (18 U.S.C. §§ 2510, 3127).
- FISA Amendments: Introduces tailored requirements for intelligence uses, like proving necessity and disclosing disruptions, which were not previously specified for these devices.
- Evidence and Remedy Rules: Bars illegally obtained data from proceedings (expanding suppression rules) and adds civil remedies, going beyond current Fourth Amendment protections.
- Reporting Mandates: Requires new transparency through Inspector General reports, unlike prior ad-hoc oversight.
Potential Impacts
- Government Agencies: Law enforcement and intelligence (e.g., FBI, NSA) face stricter hurdles for using simulators, potentially slowing investigations but reducing legal risks from overreach. FCC gains rulemaking duties, and prisons must enhance compliance for contraband tools.
- Citizens: Enhances privacy by limiting incidental surveillance of bystanders' devices, protecting against service disruptions (e.g., emergency calls), and enabling lawsuits for abuses. However, it may hinder rapid responses in crises.
- International Relations: Restricts U.S. intelligence use abroad against Americans, aligning with privacy norms but possibly complicating foreign operations; no direct impact on allies or adversaries noted.
Main Stakeholders Affected
- Law Enforcement and Intelligence Agencies: Federal (e.g., DOJ, DHS, DoD), state, and local police; intelligence community (e.g., CIA, NSA)—must adapt to warrant processes and reporting.
- Citizens and Privacy Advocates: Mobile users, especially in urban or event areas, gain protections; civil liberties groups (e.g., ACLU) benefit from transparency.
- Telecom Sector and Regulators: FCC and carriers ensure device compliance; affected by disruption disclosures.
- Correctional Facilities: Prisons and operators of anti-contraband systems need to meet new operational standards.
- Courts and Judges: Handle more specialized warrant applications and notices.
- Researchers and Tech Firms: Universities and labs can continue ethical work; device manufacturers must certify models.
Notable Legal, Constitutional, or Political Implications
- Legal/Constitutional: Strengthens Fourth Amendment privacy rights by mandating warrants for invasive tracking, addressing concerns from cases like Carpenter v. United States (2018) on cell data warrants. Defines "derived" evidence broadly to prevent loopholes, but exceptions for emergencies and FISA may face challenges if seen as undermining probable cause. Civil remedies empower individuals without needing class actions.
- Political: Bipartisan (introduced by Reps. Lieu and McClintock), it balances national security with civil liberties amid debates on surveillance post-Snowden. Could spark controversy over delaying tools for crime-fighting or intelligence, potentially leading to amendments or state variations. Inspector General reports promote accountability, reducing secrecy in federal operations.
This summary was generated by AI and may contain inaccuracies. Refer to the official source document for the authoritative text.
Sponsor
Cosponsors (1)
Recent Actions
- 2025-07-29: Referred to the Committee on the Judiciary, and in addition to the Committees on Intelligence (Permanent Select), Armed Services, and Energy and Commerce, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
- 2025-07-29: Referred to the Committee on the Judiciary, and in addition to the Committees on Intelligence (Permanent Select), Armed Services, and Energy and Commerce, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
- 2025-07-29: Referred to the Committee on the Judiciary, and in addition to the Committees on Intelligence (Permanent Select), Armed Services, and Energy and Commerce, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
- 2025-07-29: Referred to the Committee on the Judiciary, and in addition to the Committees on Intelligence (Permanent Select), Armed Services, and Energy and Commerce, for a period to be subsequently determined by the Speaker, in each case for consideration of such provisions as fall within the jurisdiction of the committee concerned.
- 2025-07-29: Introduced in House
- 2025-07-29: Introduced in House
Bill Versions
- Cell-Site Simulator Warrant Act of 2025 — issued 2025-07-29 — PDF (38 pages)