New Delhi, Oct. 5 -- A federal judge in Oregon has temporarily blocked the Trump administration's plan to deploy 200 National Guard troops to Portland, marking a significant legal setback for former President Donald Trump as he seeks to assert federal control over security operations in Democratic-led cities.

US District Judge Karin J. Immergut, a Trump appointee, issued a temporary restraining order (TRO) on Saturday halting the deployment of the Oregon National Guard. The order - set to expire on 18 October unless extended - was granted after the State of Oregon and the City of Portland jointly sued to prevent federal intervention.

In her ruling, Immergut said the U.S. Constitution "grants Congress the power to call forth troops - the...