President Trump's executive order challenging birthright citizenship will face its first legal test in a Seattle courtroom Thursday.

The 38-page lawsuit contends Mr. Trump's executive order "will have a devastating and chaotic impact," arguing birthright citizenship is guaranteed, not only in the 14th amendment but also in a federal statute that details who is entitled to birthright citizenship.

President Donald Trump is seeking to end birthright citizenship, a move to cut off a longstanding constitutional right that could leave hundreds of thousands of Texas children without legal status. The move has been questioned by legal scholars and it has already drawn lawsuits from the American Civil Liberties Union and a coalition of Democratic-led states.