Ivan “Sergio” Chaparro, the early morning shift supervisor at Oceanview Diner on Fourth Street in Berkeley, was detained by federal immigration agents while boarding a flight to Las Vegas from a Bay Area airport on August 28. Chaparro, a father of three who has worked at the diner for more than six years, is now being held in a detention facility, according to friends. His detention has created heightened fear within the local community that has come to know him.
The arrest was first reported by KTVU, which noted that friends describe Chaparro as having no immigration documents. Will Bishop, who knows Chaparro from the diner, described him as friendly, engaging, and good with customers. Shawna Jones, another community member, said the detention is creating a lot of fear for the community, and she has since set up a GoFundMe page to support Chaparro’s legal defense fund.
KTVU reported that it contacted federal immigration officials about Chaparro’s case; officials requested additional identifying information, which the station provided, and as of publication a response from immigration officials remained pending.
An Airport Arrest Enabled by a Federal Data-Sharing Deal
Chaparro’s arrest reflects a broader operational shift documented since May 2025, when the Transportation Security Administration and Immigration and Customs Enforcement signed an information-sharing agreement allowing TSA to share domestic flight passenger lists and photos with ICE, according to CBS News. That arrangement gives agents a mechanism to identify and detain travelers at departure gates, a marked change from enforcement historically centered on criminal or public safety offenses. Enforcement of the REAL ID Act, which began in May 2025 and requires airline passengers to present a compliant state license or approved federal document at security checkpoints, has added another layer of identity scrutiny for undocumented travelers at the gate, per the Transportation Security Administration.
Santa Clara University immigration law professor Evangeline Abriel told KTVU that federal immigration enforcement has shifted away from daily street arrests toward operations inside airports. Abriel noted that ICE agents maintain authority to make arrests based on factors including appearance, accent, or presence in certain locations, and said airport arrests allow ICE officers to operate with less public pushback than street-level encounters. She also told the station that airport immigration arrests have led to a significant increase in habeas corpus petitions filed in federal district courts, and that a rapid response network can assist with securing prompt legal representation for people detained by federal agents.
Why Airports, Not Kitchens
The shift toward transit hubs is not incidental. California’s Immigrant Worker Protection Act, known as AB 450, prohibits employers from granting voluntary consent to federal immigration agents seeking to enter nonpublic workplace areas without a judicial warrant or subpoena, according to the California Department of Justice. That state restriction limits ICE from conducting unannounced raids inside California dining rooms and kitchens, pushing agents toward federally controlled spaces like airport terminals instead.
Oceanview Diner’s worker-owners had already anticipated that dynamic. In December, staff posted window signs clarifying that law enforcement needs a warrant to access nonpublic areas of the restaurant, and established internal protocols in case immigration agents showed up, as Hoodline reported in its warrant-only sign story. The diner, originally opened in 1982 as Bette’s Oceanview Diner, was saved from permanent closure in early 2022 when seven staff members took out a loan to take it over as worker-owners, according to SFGATE.
Berkeley’s Sanctuary Legacy Meets Federal Jurisdiction
Berkeley became the nation’s first sanctuary city in November 1971 in response to Vietnam War resisters, a legacy the Berkeley City Council and Police Department reaffirmed in January 2025 to limit local assistance with federal civil immigration actions. That policy, governed locally under California’s Values Act, SB 54, means local police generally do not cooperate with federal civil immigration enforcement — but it carries no authority over federal jurisdiction inside an airport terminal, which is exactly where Chaparro was detained.
Chaparro’s case also lands amid a documented surge in national enforcement activity. ICE recorded 49,571 arrests nationwide in July, a 70% increase since February and a monthly high for the Trump administration’s second term, Hoodline previously reported in its record ICE arrests coverage. That expansion has been driven in part by recent federal funding for 12,000 new agents.
Detention Conditions and a Pending State Fix
Conditions inside regional ICE detention facilities have drawn state scrutiny. A May 2026 California Department of Justice inspection report documented persistent health and safety deficiencies across contracted regional facilities, including Mesa Verde and Golden State Annex, where detainees frequently rely on commissary purchases to meet basic nutritional needs. The California Legislature passed a statewide Bill of Rights for ICE detainees in August, following six federal detention deaths, seeking to establish enforceable health and safety standards for people held in immigration custody.
For Bay Area families facing situations like Chaparro’s, the Alameda County Immigration Legal and Education Partnership operates a rapid response hotline at 510-241-4011 between 6 a.m. and 6 p.m. to verify reported ICE actions and dispatch legal assistance to detained residents. Jones’s GoFundMe page remains active to help cover legal costs as Chaparro’s case moves forward, while federal immigration officials’ response to KTVU’s inquiry remains outstanding.
