The Brief

California’s southern border, long ‘ground zero’ in the fight between federal and local officials over immigration policy, is now at the center of renewed controversy over how far local leaders can go to protect people from deportation.

After San Diego County took steps earlier this month to strengthen safeguards for undocumented residents, an organization led by President-elect Donald Trump’s adviser Stephen Miller sent a letter warning that elected leaders and employees of “sanctuary” jurisdictions could be “criminally liable” if they impede federal immigration enforcement.

In the Dec. 23 letter, America First Legal Foundation wrote: “We have identified San Diego County as a sanctuary jurisdiction that is violating federal law.”

The conservative legal nonprofit that day announced that it had identified 249 elected officials in sanctuary jurisdictions who it said could face “legal consequences” over immigration policies. The California Attorney General’s office and Los Angeles Mayor Karen Bass were sent similar letters.

The letter also suggests sanctuary city officials could be civilly liable under federal anti-racketeering laws.

With Trump pledging to carry out the “largest mass deportation campaign in U.S. history,” San Diego’s board of supervisors enacted a policy on Dec. 12 prohibiting local law enforcement from communicating with immigration authorities about undocumented people in local jails without a judicial warrant.

San Diego’s newly enacted ordinance goes a step further than California’s existing state “sanctuary” law, which only limits cooperation between local law enforcement and the federal Immigration and Customs Enforcement (ICE). The law prevents jailers from notifying ICE about non-citizen inmates who are about to be released from local criminal custody unless they committed one of about 800 serious crimes. State prison officials regularly communicate with ICE about people in their custody, including U.S. citizens, public records show.

San Diego County’s action faced immediate pushback, with the county’s top law enforcement official, Sheriff Kelly Martinez, saying she would not follow the new policy and would continue allowing immigration authorities access to the jail inmates.

American First Legal Foundation sent its letter to the chair of San Diego County’s Board of Supervisors, Nora Vargas, who stepped down from her position on Friday citing security concerns just weeks after being elected to a second term.

“Federal law is clear: aliens unlawfully present in the United States are subject to removal from the country, and it is a crime to conceal, harbor, or shield them. It is also a crime to prevent federal officials from enforcing immigration law,” states the letter, dated three days after the resignation.

Vargas referred questions about the letter to a spokesperson, who did not immediately comment. Vargas, who was born in Tijuana, has long championed rights for asylum seekers and immigrants. She was the first immigrant and Latina to serve on San Diego’s board of supervisors. She was elected to the board in 2020, flipping the seat from Republican to Democrat for the first time in decades.

Spokespersons for Trump’s transition team did not immediately respond to inquiries about whether the administration plans to prosecute local officials in sanctuary cities. Trump has named Miller to be his deputy chief of staff for policy and homeland security advisor.

California preparing legal battles with Trump administration

State officials have asked the Legislature, in a special session called by Gov. Gavin Newsom last month, for $25 million for legal fights with the incoming administration on issues including immigration.

“This is a scare tactic, plain and simple,” read a statement from the Attorney General Rob Bonta’s office, in response to the America First letter. “While we are unable to comment on the specifics of the letter, we want to be clear: SB 54 was upheld by the courts during the first Trump administration, and it prevents the use of state and local resources for federal immigration enforcement with certain narrow exceptions. SB 54 does nothing, however, to block federal agencies from conducting immigration enforcement themselves. California will continue to comply with all applicable state and federal laws, and we expect all local law enforcement agencies to do the same.”

Democratic state Senate leader Mike McGuire, of Healdsburg, in response to the letters called the incoming administration’s proposed immigration policies “draconian” and damaging to California’s economy.

“The previous Trump administration came at California before on a variety of legal fronts and the majority of the time, lost,” said McGuire, whose office did not receive a letter. “Mark my word, we’ll be prepared again.”

The state is home to several major cities with policies limiting cooperation between local police and federal immigration authorities. Proponents say such policies make immigrants less fearful of deportation when reporting crimes to or cooperating with the police. Los Angeles adopted a sanctuary city ordinance in November, fast-tracking the policy after Trump’s election.

Asked for comment on the America First letter, Zach Seidl, a spokesperson for Los Angeles Mayor Karen Bass, called it “wrong on public safety and wrong on the law.”

“Sanctuary policies are against the law, make a mockery of America’s democratic principles, and demonstrate a shocking disrespect for our Constitution and our citizens. The officials in charge of sanctuary jurisdictions have no excuse and must be held accountable,” read a statement from James Rogers, a senior counsel with America First Legal.

Trump targeted California sanctuary cities before

The state’s own sanctuary law, signed by then-Gov. Jerry Brown in 2017, curbs local sheriffs’ transfers of detainees to federal immigration custody and also prohibits police from asking people about their immigration status. That law, Senate Bill 54, contains an exception for state prisons, which regularly transfer ex-inmates who have completed their sentences to Immigration and Customs Enforcement for deportation proceedings.

Trump advisers, including Miller, have been considering using federal pressure, such as withholding federal funds, against jurisdictions that won’t cooperate with federal immigration authorities. The last Trump administration tried to get the California sanctuary law overturned in federal court, but the Supreme Court in 2020 declined to hear its petition. And in 2018, Trump’s Department of Homeland Security floated criminal charges against politicians of cities that enact sanctuary policies. It did not file charges.

“So-called ‘sanctuary’ jurisdictions that forbid compliance with federal immigration law and cooperation with the officials who enforce it are, therefore, breaking the law. Moreover, sanctuary jurisdictions are strictly prohibited from requiring their employees to violate federal immigration law,” the America First letter states.

But Ahilan Arulanantham, co-director of the Center for Immigration Law and Policy at the UCLA School of Law, said the letter’s reasoning that sanctuary policies amount to “harboring” or concealing federal fugitives is flawed.

“Not inquiring about someone’s status is not harboring. Neither is declining to share such information,” Arulanantham said in a text message Friday. “I’m not aware of any criminal protections based on such conduct, and the letter fails to cite any.”

To carry out his plan to deport more people than any other president, Trump will need the cooperation of local officials. Immigrant Legal Resource Center, a national nonprofit that provides legal training and does pro-immigrant policy work in California and Texas, estimates 70 to 75% of ICE arrests in the interior of the U.S. are handoffs from another law enforcement agency, such as local jails or state or federal prisons. Since 2019, California’s state prison system has delivered more than 5,700 formerly incarcerated immigrants to ICE, federal data shows.

San Diego was the epicenter of a surge of unauthorized crossings earlier this year, straining local resources. In April, 37,370 people crossed between ports of entry in the San Diego sector, with the majority surrendering to Border Patrol to claim asylum. This made it the top spot for crossings in the country for a few weeks in 2024, according to federal data. The number of unauthorized crossings dropped sharply after the Biden administration implemented new asylum restrictions in June.

The 2028 Olympic soccer final matches will take place at the Rose Bowl in Pasadena, but earlier games will be played at stadiums across the U.S.

Those locations were announced Tuesday by the Olympics organizers. Stadiums in San Diego and San Jose in California will host Olympic soccer matches. So will New York City, Columbus, Nashville and St. Louis.

The venues outside of the L.A.-area will host group stage and knock-out matches in the Olympic tournament ahead of the final stage matches in Pasadena. The Games will allow fans from around the country to view Olympic competitions.

The additional stadiums where Olympic soccer matches will take place are:

• Etihad Park in New York City
• ScottsMiracle-Gro Field in Columbus, Ohio
• GEODIS Park in Nashville, Tennessee 
• Energizer Park in St. Louis, Missouri 
• PayPal Park in San Jose
• Snapdragon Stadium in San Diego

LA28 said in a news release that organizers "intentionally designed the tournament to include stadiums from the East Coast to West Coast to minimize travel demands."

Dates and locations for the women's and men's tournaments will be announced before ticket sales start in April.

The 2026 Winter Olympics in Milan begin Friday and eight athletes have roots in Southern California, including Los Angeles, Riverside and San Bernardino counties.

Team USA’s 232-member roster includes 21 athletes from California. The Winter Games begin Feb. 6 and end on Feb. 22.

Here's a list of who is from L.A. County:

• Spencer Akira Howe - Figure Skating - Los Angeles
• Madison Chock - Figure Skating - Redondo Beach
• Chloe Kim - Snowboarding - Torrance
• Azaria Hill - Bobsled - Santa Clarita
• Beatrice Kim - Snowboarding - Palos Verdes 

Where other SoCal athletes are from:

• Cayla Barnes - Ice Hockey - Eastvale
• Kate Delson - Snowboarding - San Diego
• Maddie Mastro - Snowboarding - Wrightwood

What about the 2026 Paralympics? The Milano Cortina 2026 Paralympics will start on March 6 and run through March 15. Not all qualifying athletes have been announced yet.

You can watch the games starting Friday on NBC and streaming on Peacock.

Local, state and federal law enforcement agencies have reported using thousands of crowd control munitions against protesters in L.A. since June 2025, when federal immigration sweeps began escalating tensions in the region.

Many people who were never accused of breaking the law nonetheless have been struck by what are known as “less-lethal” crowd control weapons, including rubber bullets, tear gas and flash bang grenades.

Legal experts and witnesses told LAist some of these instances violated California’s protest laws.

While a federal judge banned the LAPD from using 40mm projectiles at protests last month, the department still uses other crowd control weapons. According to Scott Reynhout, who researches these weapons for Physicians for Human Rights, a nonpartisan nonprofit, some of these weapons can be just as dangerous as the banned projectiles — if not more so.

LAist spoke with Reynhout to better understand what they do and how people protesting lawfully can protect themselves.

Reynhout said it's very important that people pay attention if law enforcement declares an unlawful assembly, which they are required to do before using crowd control weapons in most cases.

“ If the police have declared an illegal assembly, it would behoove you to take steps to isolate yourself from that particular situation,” Reynhout said. “If that is not possible for you, for whatever reason — say, you live in the particular area where you are — then you could consider [protecting] yourself from chemical irritants or potentially from impact projectiles.”

Some of the most dangerous crowd control weapons used in L.A.

Physicians for Human Rights’ international study, Lethal in Disguise, found weapons that fire multiple projectiles at once were “far and away the most dangerous” type of crowd control weapons.

 "82% of all the recorded injuries in the medical literature that came from impact projectiles were from ... multiple projectile impact projectiles,” Reynhout told LAist. “And 96% of all the ocular injuries from impact projectiles were from these multiple projectile impact projectiles."

He said the LAPD is the only police department in the U.S. he is aware of that uses this type of weapon. The department uses a 37mm less-lethal launcher (LLM) that shoots five rubber bullets with each shell.

According to reports required by Assembly Bill 48, the department used more than 600 of these shells — that’s over 3,000 projectiles — against anti-ICE protesters last June. They have continued to report using the 37mm launcher, most recently to disperse crowds after the Dodgers World Series win on Nov. 2, according to AB 48 reports.

The 37mm launcher is inherently risky, Reynhout said. Even though the 37mm rubber bullets are smaller than the 40mm projectiles the LAPD was banned from using at protests, they are more likely to hit sensitive areas like the face and neck.

The use of multiple projectiles causes the 37mm projectiles to scatter in a cone shape once they leave the launcher, making them much more difficult to control than a single projectile. He said LAPD’s policy of “skip firing,” which means officers are instructed to aim 5 to 10 feet in front of the person they are shooting at, also adds randomness.

A diagram showing LAPD's policy of "skip firing" the 37mm less-lethal launcher at targets.

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LAPD Use of Force Directive

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“ The real risk behind these multi-shot impact projectiles,” he said, “is that you just really don't have any control over where these bullets go in the end.”

Reynhout said people standing beside or behind the intended target could very easily get hit, which he believes was likely the case when Australian reporter Lauren Tomasi was struck in the leg by a rubber bullet in June.

[Note: LAist correspondent Adolfo Guzman-Lopez was struck in the throat by a projectile at a 2020 protest. Long Beach police later said they believed that injury was caused by a ricochet of a foam round.]

LAist reached out to LAPD for comment on their use of the 37mm launcher, but the department did not respond.

Another type of crowd control weapon found to be especially dangerous is the use of beanbag rounds, usually fired from a 12-gauge shotgun. These rounds fire small lead pellets sealed in a fabric bag.

Reynhout said the use of these rounds can be “horrific” and leave people with life-threatening injuries.

According to LAPD policy, beanbag rounds are not allowed to be used for crowd control, but other agencies have used them. The California Highway Patrol reported using beanbag rounds against anti-ICE protesters last June.

If you find yourself in a situation where projectiles are being deployed, Reynhout advises focusing on protecting your face and eyes. That’s where the most serious injuries occur.

Reynhout said ballistic eyewear that meets military standards (MIL-PRF-32432) could offer protection against some of the most severe injuries.

He said the 40mm or 37mm projectiles can be similar to getting hit by a golf ball by someone swinging just 6 feet away, and while things like bike helmets, paintball masks, hockey masks or even soft body armor might help to some degree, they aren’t designed to protect someone from that kind of impact.

What you may most likely be affected by: Chemical agents

Chemical agents like tear gas and pepper spray are crowd control weapons that saturate an area and affect everyone in it, Reynhout told LAist, and that includes people who may not even be part of a demonstration.

He said you should be especially aware of these weapons being used near you if you have asthma or any airway or respiratory system issues because they can provoke severe reactions in some cases.

In their report, Reynhout and other researchers found that children and older people are also at risk of severe reactions, which could be life-threatening.

There is gear on the market to mitigate those risks, including sealed safety goggles and respirators (N-, P- or R-100). If you find yourself exposed to a chemical irritant like tear gas or pepper spray, Reynhout said there is nothing shown to be more effective than flushing the area for 10 to 15 minutes with saline solution.

The saline solution should ideally be sterile and at body temperature, he told LAist, but plain water also works if that is what you have available. The important thing is that you continue to flush the area and dilute the chemicals.

For skin or clothing, Reynhout said dilution with water is still the key, but you can use some Dawn dish soap to help wash away pepper spray.

Other dangers

California law enforcement officers have also used flash bang grenades in response to protests since June. The L.A. County Sheriff’s Department and California Highway Patrol together used more than 300 aerial flash bang grenades on June 8, according to AB 48 reports. Those are crowd control munitions shot out of 40mm launchers that explode mid-air and create 170 dB of sound and 5 million candelas of light.

LAist asked the LAPD about their policy on using flash bang grenades for crowd control, but the department did not respond. The LAPD has not listed any uses of flash bang grenades in their AB 48 reports dating back to April 2024.

Aside from these, there are a number of other crowd control weapons and devices that are used by law enforcement agencies in the L.A. area: grenades that explode to release small rubber balls, pepper balls, batons or — unique to the LAPD — officers on horseback using wooden practice swords called “bokken.”

Reynhout said deciding how much protection you might choose to take with you to a protest is very personal. Some bulkier items might restrict your movement, cause you to overheat or impede your ability to maintain situational awareness, so it is important to consider what risks you may face and use your best judgement.

Sometimes, he said, that best judgment might be to walk away from the situation.