California’s “sanctuary city” mayors are vowing to resist President Donald Trump’s effort to make them obey immigration laws, after he signed an executive order Wednesday cutting off federal funds to “jurisdictions that willfully refuse to comply.” Sanctuary cities and states are those that have offered shelter to illegal aliens by refusing to cooperate with federal officials in enforcing of federal immigration laws — in some cases, even refusing to turn over criminals for deportation proceedings. President Trump promised on the campaign trail to end sanctuary cities, and Wednesday’s executive order is the first step in carrying out that pledge. It declares: “Sanctuary jurisdictions across the United States willfully violate Federal law in an attempt to shield aliens from removal from the United…