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City Attorney

We work to protect and advance the policies, interests, and communities of San Francisco. Learn more about some of our major cases and initiatives.

Climate change

Consumer protection

San Francisco City Attorney Chiu sues largest manufacturers of ultra-processed foods

City Attorney secures over $600,000 from predatory immigration consulting business

City Attorney reaches settlement with U.S. News & World Report that requires greater transparency in financial disclosures

Court blocks Oakland airport from using new name that violates San Francisco’s registered trademark

City Attorney secures $1 million dollar judgment against company whose marketing impersonated government and deceived small businesses

City Attorney sues most-visited websites that create nonconsensual deepfake pornography

Joint Statement by City Attorney David Chiu and Treasurer José Cisneros regarding the Supreme Court’s decision in CFPB v. Community Financial Services Association of America

Federal court dismisses U.S. News and World Report’s baseless lawsuit against City Attorney

San Francisco sues Oakland over airport renaming that infringes on SFO’s trademark

Proposed Oakland International Airport renaming infringes on SFO’s trademark

Chiu highlights consumer protection efforts during Consumer Protection Week

City Attorney secures appellate victory in taxi medallion lawsuit

City Attorney seeks to dismiss U.S. News and World Report’s baseless lawsuit

U.S. News and World Report tries to obstruct investigation of unlawful business practices

City Attorney sues maker of Vanilla gift cards over consumer scams

Problematic COVID test sites cease operations after City enforcement action

U.S. News & World Report faces legal scrutiny over dubious hospital rankings

San Francisco and San Diego City Attorneys subpoena Home Title Lock over deceptive advertising

Chiu sues company impersonating government and defrauding small businesses

City Attorneys and County Counsels applaud new California consumer protection law

Court finds predatory immigration consulting business violated the law

City Attorney takes legal action to stop predatory immigration consulting business

City Attorney provides update on rogue COVID testing sites investigation

City Attorney Chiu Subpoenas COVID Testing Operator

City Attorney Chiu Initiates Investigation into Rogue COVID Testing Operators

Economic development

Housing & tenant rights

Government efficiency

Immigration

San Francisco leads coalition opposing HUD proposal targeting immigrant families

City Attorney issues statement on birthright citizenship following SCOTUS oral argument

First Circuit continues to block Trump’s birthright citizenship order

City Attorney secures over $600,000 from predatory immigration consulting business

Federal court continues to block Trump’s birthright citizenship order from taking effect

Lawsuit protecting sanctuary jurisdictions from illegal federal overreach grows to 50 local governments

City Attorney Chiu statement on SCOTUS ruling in universal injunction case

San Francisco AAPI leaders highlight importance of birthright citizenship in advance of SCOTUS oral argument

Federal court blocks Trump Administration from withholding funds to sanctuary jurisdictions

San Francisco and Santa Clara County issue statement in advance of hearing in sanctuary lawsuit against Trump Administration

San Francisco and Santa Clara County-led coalition seeks injunction to stop federal overreach against sanctuary jurisdictions

16 cities and counties join lawsuit protecting sanctuary jurisdictions from illegal federal overreach

SF City Attorney Chiu and Attorneys General release statement on preliminary injunction issued in birthright citizenship case

San Francisco leads lawsuit protecting sanctuary jurisdictions from illegal federal overreach

San Francisco City Attorney and Attorneys General file suit to protect birthright citizenship

City Attorney Chiu statement on inauguration of Donald Trump

Appeal Court upholds San Francisco’s noncitizen voting program

City Attorney issues statement in advance of oral arguments in noncitizen voting case

San Francisco and County of Santa Clara conclude ‘public charge’ lawsuit

Court finds predatory immigration consulting business violated the law

Court of Appeal allows San Francisco noncitizen voting program to continue for November election

City Attorney takes legal action to stop predatory immigration consulting business

Respondents San Francisco and Santa Clara County issue statement on U.S. Supreme Court’s dismissal of ‘public charge’ case

San Francisco joins amicus brief urging U.S. Supreme Court to vacate harmful immigration ruling

California respondents issue statement in advance of U.S. Supreme Court ‘public charge’ case oral arguments

San Francisco, County of Santa Clara, State of California File Briefs in U.S. Supreme Court ‘Public Charge’ Rule Case

San Francisco joins amicus brief urging federal court to support DACA program

Public health

Public integrity

Public safety

City Attorney Chiu and Attorney General Bonta sue websites distributing 3D-printed gun blueprints

City Attorney cracks down on drug and gambling dens fronting as convenience stores

City Attorney shuts down brothel fronting as a massage parlor

City Attorney sues Tenderloin drug and gambling dens fronting as small businesses

City Attorney cracks down on illegal grow houses that undermine legal cannabis market

City Attorney shuts down illegal gambling dens and unsanctioned nightclubs

City Attorney seeks to shut down Tenderloin gambling dens

City Attorney clamps down on illegal cannabis grow houses that undermine legal cannabis market

Online marketplaces restrict sales of illegal license plate covers after City Attorney action

San Francisco cracks down on illegal license plate covers used to evade police

City Attorney statement on DMV suspension of Cruise autonomous vehicles in San Francisco due to safety concerns

San Francisco seeks reprieve from CPUC decision allowing unfettered autonomous vehicle expansion

City Attorney using red flag law to remove guns from accused Richmond District synagogue shooter

San Francisco announces citywide response protocol to address hate incidents

City Attorney David Chiu and Mayor London Breed Issue Joint Statement Regarding Supreme Court Ruling on Gun Restrictions

City Attorney Chiu sues companies responsible for illegal dumping on Treasure Island

City Attorney Chiu, Attorney General Bonta, and Mayor Breed Announce 60-Day Extension of MOU on Police Use of Force Investigations in San Francisco

City Attorney Chiu, Attorney General Bonta, Mayor Breed Issue Joint Statement Regarding MOU on Police Use of Force Investigations in San Francisco

Worker protection

San Francisco City Attorney David Chiu speaks at a podium alongside Santa Clara County Counsel Tony LoPresti and San Francisco Chief Deputy City Attorney Yvonne R. Meré in February 2025

Standing up for SF

Since January 2025, we have filed 15 lawsuits against the Federal Administration. We work to protect San Francisco’s funding, defend the rights and safety of residents, and stand up for the rule of law.Learn more