A federal judge is set to hear the first arguments in a multi-state lawsuit seeking to block President Donald Trump’s executive order ending the constitutional guarantee of birthright citizenship regardless of the parents' immigration status.

Washington state is suing the Trump administration over the president's executive order to end birthright citizenship, with Arizona, Oregon, and Illinois joining the lawsuit. Why it matters: The legal challenge,

Brown on Tuesday announced a lawsuit targeting Trump’s executive order that aims to end birthright citizenship. Washington’s new AG, who was sworn in last week, decried the directive as “unconstitutional,” “cruel” and “simply un-American.”