Trump's order is premised on the idea that increasing Delta pumping would make more water available for the rest of California. But experts say its more complicated than that.

President Donald Trump is asserting more federal government control over water management decisions in California and ordering US officials to override local authorities, casting the steps as necessary to boost the state’s firefighting capabilities.

Donald Trump signed a wide-ranging executive order demanding federal and state officials deliver more water and other resources to southern California.

Trump has signed an executive order seeking to circumvent federal and state laws dealing with California's water system in an effort to provide the southern part of the state with necessary water resources to fight wildfires.

The president, who has assailed California’s leaders over wildfires, issued the directive in an executive order that was dated Friday but released on Sunday.