A trial to determine if National Guard troops can be deployed to Portland began Oct. 29, with Oregon and the Trump administration outlining their arguments, which repeated the points they have made for about a month.

U.S. District Court Judge Karin Immergut heard opening arguments from Oregon, Portland, California and the Trump administration in what is set to be a three-day trial.

At issue is whether President Donald Trump has the authority to federalize and deploy the National Guard in response to protests at Portland's ICE facility.

Immergut, who was appointed by Trump, blocked the federalization and deployment of Oregon National Guard members and the deployment of any federalized National Guard to Oregon in a pair of temporary restraining orders issued Oct. 4 and Oct. 5 .

Judge

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