Three new California laws change how the state handles detention facilities, fatal shootings involving immigration officers and the use of state property. But they do not stop federal immigration enforcement.
When federal immigration agents show up in a California community, families may have a simple question:
What can California actually do about it?
Three laws signed by Gov. Gavin Newsom on Sept. 29—AB 1633, AB 1806 and AB 1807—give part of the answer.
But they do very different things.
And none gives California control over federal immigration enforcement.
AB 1807: California property cannot simply become federal immigration-enforcement space
AB 1807 is the law most directly connected to what happens when federal agents operate on California property.
The law restricts specified immigration-enforcement uses of state-owned property, including staging, parking or deploying vehicles and personnel, processing or interviewing people, temporarily detaining people and taking custody of people.
That includes state buildings, garages, parking lots, state parks and other state-owned property.
But this is not a ban on ICE operating in California.
The law has exceptions, including certain existing leases and specified uses involving state agencies. It also does not prevent execution of a lawful judicial warrant.
So if federal agents show up somewhere in California, AB 1807 does not automatically answer whether they can make an arrest.
The narrower question is whether they are using California-owned property in a way covered by the new law.
The main provisions generally take effect Jan. 1, 2027. State agencies must establish procedures for documenting attempted or actual prohibited uses and notifying the Attorney General’s office by July 1, 2027.
AB 1806: What happens if an immigration officer fatally shoots an unarmed civilian?
AB 1806 addresses a different problem.
If an immigration-enforcement officer shoots and kills an unarmed civilian, the state prosecutor must conduct an independent investigation and make a written report public, subject to legally required redactions.
If the investigation finds that criminal charges are warranted, the prosecutor may initiate and prosecute the case.
There is an important limit here.
The law specifically says it does not regulate the conduct of federal agents or impose requirements that conflict with the federal Supremacy Clause.
So AB 1806 creates a California investigation and accountability process. It does not put federal immigration officers under California’s general control.
The law generally takes effect Jan. 1, 2027.
AB 1633: A new tax on private detention facilities
AB 1633 works even further upstream.
It creates a 25% annual tax on the gross income of private detention-facility operators, beginning July 1, 2028.
The tax applies whether the facility’s contracting agency is federal, state or local.
Money collected goes toward the state’s Due Process for All Fund, which can support immigration-related services when money is appropriated by the Legislature.
This does not give someone a new right when ICE arrests them.
It targets the private detention system itself.
That distinction is important because these three laws are sometimes described broadly as new “immigrant protections.” They are not all doing the same job.
So what does this mean for families?
California already has laws limiting what state and local agencies can do to assist federal immigration enforcement.
But those laws do not prevent ICE from conducting federal immigration enforcement in California.
If you want to know more about that distinction read what ICE’s latest enforcement push means for Southern California families. California’s sanctuary laws limit cooperation by state and local agencies; they do not eliminate federal immigration enforcement.
Our recent explainer on new ICE arrest rules in Los Angeles also shows why families should be careful about assuming that one new California law answers every question about an immigration arrest.
The same principle applies here.
California can regulate California resources.
Federal law governs federal immigration enforcement.
These new laws draw new lines around that boundary.
They do not:
- give someone immigration status;
- stop ICE from operating in California;
- prohibit every immigration arrest;
- decide someone’s federal immigration case; or
- give California control over deportation decisions.
For families, that means the headline “California passed new immigration laws” is only the beginning.
The useful question is:
Which law applies to what is happening to my family?
When do the changes begin?
AB 1806 and AB 1807 generally take effect Jan. 1, 2027.
AB 1807’s state-agency documentation procedures are due by July 1, 2027.
The private detention-facility tax created by AB 1633 begins July 1, 2028.
California’s new laws are therefore not a single switch that suddenly changes immigration enforcement.
They are pieces of a larger system.
Parriva has already been tracking the broader package in our guide to California’s 21 new immigration laws, including measures involving detention, courthouses, workers and state oversight.
The next story is implementation: what California agencies actually do, how detention operators respond, and where federal officials challenge the state’s authority.
For families, that is where these laws will become real.
The signing ceremony was the beginning. The practical impact comes next.
