Sounds like it may be, according to what a Justice Department attorney argued:
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Excerpts from ABC News 4/14/17

President Donald Trump's executive order withholding funding from communities that limit cooperation with immigration authorities applies to a small pot of grant money, not the billions of dollars that San Francisco and a California county say is at stake for them, a lawyer with the Department of Justice said Friday.

The order would affect less than $1 million in funding for Santa Clara County and possibly no money for San Francisco, Readler said. "There is no mystery," he said.

http://abcnews.go.com/Politics/wireStory/judge-hear-arguments-trump-sanctuary-city-order-46793570