Illinois leaders went to court Monday to stop President Donald Trump from sending National Guard troops to Chicago, escalating a clash between Democratic-led states and the Republican administration during an aggressive immigration enforcement operation in the nation’s third-largest city.

The legal challenge came hours after a judge blocked the Guard's deployment in Portland, Oregon.

Illinois Gov. JB Pritzker said some 300 of the state’s guard troops were to be federalized and deployed to Chicago, along with 400 others from Texas.

Pritzker called on Republican Texas Gov. Greg Abbott to block it.