After that report, Lt. Colonel Tom Keegan said state officials have not rejected anything since Brown responded to the federal government last Wednesday with the proposed "Memorandum of Agreement between the State of California and The Department of Defense and the Department of Homeland Security".
"This will not be a mission to build a new wall", Brown said in a statement last week.
Trump has frequently clashed with Brown over the state's "sanctuary" policies limiting the participation of state and local police in federal immigration enforcement.
Talks between the US and California officials about the duties California troops would perform, according to the Associated Press, soured over the weekend after California officials told the Trump administration they would not participate in vehicle maintenance and other initial jobs across the border in California, Arizona, New Mexico, and Texas. The state informed federal officials that its troops will not be allowed to fix vehicles, operate remote surveillance equipment, operate radios, or provide other "mission support" to border agents.
California has rejected the Trump administration's initial plans for National Guard troops at the state's border with Mexico, arguing the work is too closely tied to immigration enforcement.More news: The Michael Cohen collusion
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Vitiello said the federal government wanted 237 troops for work in two parts of the state that California "has indicated they will not perform", but he emphasized that California may participate in other ways that must still be worked out.
"We're refining our requirements", Vitiello said. "So, at some point that might come together". Nor has California explained what criteria it would use to distinguish between immigration-related tasks and tracking transnational gangs, human traffickers and drug smugglers. Drawing that line will likely prove hard because the Border Patrol combats illegal immigration but also drug smuggling and other crimes.
The Trump administration intends to send up to 4,000 National Guard troops to the Mexico border. Texas National Guard members are already doing aerial and ground surveillance.
And they insisted they won't make the same mistakes as previous deployments such as Operation Jump Start during the Bush administration, when guard troops were deployed for construction and other forward activities - but were unarmed and had to be protected by Border Patrol agents. General Daniel R. Hokanson, the National Guard Bureau's vice chief.