U.S. District Judge John Coughenour, a Reagan appointee, scheduled the session to consider the request from Arizona, Illinois, Oregon and Washington.
A Seattle judge will rule on President Trump's birthright citizenship case brought by Democratic attorneys general from four states.
The order, signed on Inauguration Day, could impact hundreds of thousands of people born in the country, according to one lawsuit.
It marks the first court hearing on the executive order, signed by Trump on Monday, which seeks to end the right to citizenship for children who are born in the US to parents who are in the country ...