At the same time, the Trump administration has directed immigration officers to pause arrests at farms, restaurants and hotels, after Trump expressed alarm about the impact aggressive enforcement is having on those industries, according to a U.S. official familiar with the matter who spoke only on condition of anonymity.

They are trying to strike a careful balance on issues where Republicans have held a political advantage in recent years.

President Donald Trump’s deployment of military troops to California is forcing Democrats back onto politically perilous turf, as they look for ways to condemn Trump’s actions without being drawn into a broad debate over immigration or tying themselves to the chaotic scenes emerging from Los Angeles.