Trump on Saturday said he had authorised the use of “full force” if needed to suppress protests targeting immigration detention centres.

Oregon has responded by suing the Trump administration, arguing that the deployment of the National Guard to Portland is “unlawful”.

The lawsuit, filed on Sunday by Oregon Attorney General Dan Rayfield, called the move “provocative and arbitrary”, and said it “threatens to undermine public safety by inciting a public outcry”.

The deployment marks a further expansion of troop deployments in US cities, amid a wider crackdown by the Trump administration on illegal immigration.