H.R. 4811 (119th)Bill Overview

Cell-Site Simulator Warrant Act of 2025

Crime and Law Enforcement|Crime and Law Enforcement
Sponsor
Cosponsors
Support
Bipartisan
Introduced
Jul 29, 2025
Discussions
Bill Text
Current stageCommittee

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 subse…

Introduced
Committee
Floor
President
Law
Congressional Activities
01 · The brief
Plain-English summaryWhat this bill actually does

This bill creates a new federal offense and regulatory framework for the use of “cell-site simulators” (devices that simulate a mobile base station to identify, locate, or intercept cellular devices). It generally prohibits use in the United States except under detailed statutory exceptions (a judicial warrant with specific showing, narrowly tailored emergency use with prompt post-approval, certain FISA-authorized use, research, protective services, correctional contraband systems that meet safeguards, testing/training, and FCC testing).

Why people may split

Privacy vs. operational flexibility: Liberals emphasize privacy, accountability, and quick notice; conservatives emphasize preserving law enforcement and national security capabilities.

Watch point

Relative to its intended legislative type, this bill constructs a comprehensive statutory framework to regulate cell-site simulators by creating a new prohibition, specifying narrowly tailored exceptions and warrant standards, embedding minimization and accountability measures, and integrating with existing statutes (including FISA and procedural rules).

This bill creates a new federal offense and regulatory framework for the use of “cell-site simulators” (devices that simulate a mobile base station to identify, locate, or intercept cellular devices).

It generally prohibits use in the United States except under detailed statutory exceptions (a judicial warrant with specific showing, narrowly tailored emergency use with prompt post-approval, certain FISA-authorized use, research, protective services, correctional contraband systems that meet safeguards, testing/training, and FCC testing).

The bill limits the scope of allowed collection, requires minimization and disclosure procedures (including third‑party testing certifications and notice requirements), establishes civil remedies and administrative discipline, mandates inspector general reporting, and directs the FCC to adopt implementing regulations; most substantive provisions take effect two years after enactment (with limited extensions).

Passage40/100

Based solely on the bill text, this is a narrowly targeted, detailed reform with clear civil-liberties protections and multiple compromise features that improve legislative feasibility. However, it constrains law‑enforcement and intelligence tradecraft, requires interagency adjustments and FCC rulemaking, and intersects with classified authorities—factors that historically slow or block surveillance reforms. Without knowledge of sponsor leverage, coalition-building, or the appetite of relevant committees, the content indicates moderate difficulty overall.

CredibilityAligned

Relative to its intended legislative type, this bill constructs a comprehensive statutory framework to regulate cell-site simulators by creating a new prohibition, specifying narrowly tailored exceptions and warrant standards, embedding minimization and accountability measures, and integrating with existing statutes (including FISA and procedural rules).

Contention65/100

Privacy vs. operational flexibility: Liberals emphasize privacy, accountability, and quick notice; conservatives emphasize preserving law enforcement and national security capabilities.

02 · What it does

Who stands to gain, and who may push back.

Likely benefits vs burdens50% / 50%
Likely helpedLocal governments

These are examples from the analysis, not a ranked list of the most-affected groups.

Likely helped
  • Potential benefitStrengthens privacy and civil-liberties protections by generally prohibiting indiscriminate use of cell-site simulators…
  • Potential benefitIncreases transparency and accountability through required third-party equipment testing, public DOJ minimization polic…
  • Potential benefitReduces risk of unintended disruption to communications (including emergency calls and specialized hotlines) by requiri…
Likely burdened
  • Potential burdenImposes procedural and administrative burdens on law enforcement and intelligence agencies (warrant applications with s…
  • Potential burdenMay constrain urgent public-safety or national-security operations despite the emergency-use exception because of the r…
  • Local governmentsCould increase acquisition and compliance costs for state, local, and federal agencies (device testing, FCC coordinatio…
03 · Why people split

Why the argument around this bill splits.

Privacy vs. operational flexibility: Liberals emphasize privacy, accountability, and quick notice; conservatives emphasize preserving law enforcement and national security capabilities.
Progressive85%

A mainstream progressive would likely view the bill as a substantial and welcome step to protect privacy and civil liberties by sharply restricting warrantless use of device‑tracking technologies and creating transparency and oversight requirements.

The warrant requirements, minimization rules, mandatory disclosures about disruption to emergency services, notice provisions, civil remedies, and IG reporting align with priorities for accountability and protections against mass surveillance.

This persona would still be cautious about the exceptions for intelligence and certain emergency uses, the delayed effective date, and whether the implementation rules (by DOJ and FCC) will be strong enough in practice.

Leans supportive
Centrist70%

A pragmatic moderate would likely view the bill as a balanced attempt to protect privacy without unduly hamstringing legitimate law enforcement and intelligence needs.

The bill’s detailed warrant standards, emergency carveouts with prompt after‑the‑fact review, limits on duration, and IG reporting would be seen as reasonable tradeoffs.

Concerns would center on implementation details (how courts apply the ‘tried and failed’ requirement, FCC rulemaking, and whether 30‑day caps and notice timelines are workable operationally).

Leans supportive
Conservative25%

A mainstream conservative would likely be skeptical of the bill as an overreach that risks impairing law enforcement and national security operations.

They would view tight warrant requirements, civil liability, public notice requirements, fines, and IG reporting as potential constraints on effective policing and intelligence work, and worry that FCC regulation could limit operational flexibility.

While recognizing the need to prevent abuses, this persona would prefer broader exceptions for law enforcement and national security, fewer disclosure obligations, and stronger protections from litigation that could reveal sensitive techniques.

Likely resistant
04 · Can it pass?

The path through Congress.

Introduced

Reached or meaningfully advanced

Committee

Reached or meaningfully advanced

Floor

Still ahead

President

Still ahead

Law

Still ahead

Passage likelihood40/100

Based solely on the bill text, this is a narrowly targeted, detailed reform with clear civil-liberties protections and multiple compromise features that improve legislative feasibility. However, it constrains law‑enforcement and intelligence tradecraft, requires interagency adjustments and FCC rulemaking, and intersects with classified authorities—factors that historically slow or block surveillance reforms. Without knowledge of sponsor leverage, coalition-building, or the appetite of relevant committees, the content indicates moderate difficulty overall.

Scope and complexity
52%
Scopemoderate
86%
Complexityhigh
Why this could stall
  • Reactions from law enforcement, Department of Justice, and intelligence community (likely to press for classified exceptions or modifications) and how effective their lobbying would be.
  • Whether the bill would be amended in committee to broaden, narrow, or add classified carve-outs, which would materially change passage likelihood.
05 · Recent votes

Recent votes on the bill.

No vote history yet

The bill has not accumulated any surfaced votes yet.

06 · Go deeper

Go deeper than the headline read.

Included on this page

Privacy vs. operational flexibility: Liberals emphasize privacy, accountability, and quick notice; conservatives emphasize preserving law e…

Based solely on the bill text, this is a narrowly targeted, detailed reform with clear civil-liberties protections and multiple compromise…

Unlocked analysis

Relative to its intended legislative type, this bill constructs a comprehensive statutory framework to regulate cell-site simulators by creating a new prohibition, specifying narrowly tailored exceptions and warrant sta…

Go beyond the headline summary with full stakeholder mapping, legislative design analysis, passage barriers, and lens-by-lens tradeoff breakdowns.

Perspective breakdownsPassage barriersLegislative design reviewStakeholder impact map
Open full analysis