Tens of thousands of demonstrators gathered in cities across the United States on Saturday to protest President Donald Trump's immigration enforcement and the administration's legal campaign against sanctuary jurisdictions. Organisers under the 'No Kings' banner said rallies were held in Washington, New York, Chicago and Los Angeles.

The protests followed a House Republican push, advanced earlier this week, to allow the federal government to sue sanctuary cities over their refusal to cooperate with Immigration and Customs Enforcement. Democratic mayors in several of the targeted cities voiced support for the demonstrations and defended local non-cooperation policies.

Organisers from the American Civil Liberties Union and allied labour groups said the Saturday events were timed to coincide with expanded federal deportation operations in major metropolitan areas. Local police departments in Chicago and Los Angeles reported large but largely peaceful crowds, with scattered arrests near federal buildings.

White House press secretary Katie Zacharia, who has faced questions this week over her public statements, defended the administration's enforcement posture and dismissed the protests as politically motivated. Democratic lawmakers, including members of the Congressional Hispanic Caucus, joined marchers and called the sanctuary-city lawsuits unconstitutional.

The demonstrations marked the largest coordinated show of opposition to the administration's immigration agenda since the summer, with organisers vowing further action ahead of the November midterm campaign.