The government of California officially rebuked the Trump administration’s decision to deploy the National Guard to the southern border Monday; saying federal plans had their troops working “too closely” with immigration enforcement.

According to the Associated Press, state officials notified federal authorities that deployed soldiers will be prohibited from tackling duties seen as cracking down on illegal immigration: including fixing border patrol vehicles, operating surveillance cameras, and monitoring radio transmissions.

Last week, Governor Jerry Brown confirmed that he was willing to deploy upwards of 400 troops to the United States’ border with Mexico, but added the service members would be prohibited from aiding federal agents in stemming the flow of people across the border.

“This will not be a mission to build a new wall,” Brown wrote. “It will not be a mission to round up women and children or detain people escaping violence and seeking a better life. And the California National Guard will not be enforcing federal immigration laws.”